{"id":279,"date":"2024-09-18T14:00:00","date_gmt":"2024-09-18T18:00:00","guid":{"rendered":"https:\/\/www.xconvert.com\/blog\/?p=279"},"modified":"2026-06-17T23:12:32","modified_gmt":"2026-06-18T03:12:32","slug":"understanding-audio-bitrate-and-sample-rate-how-they-impact-audio-quality-and-file-size","status":"publish","type":"post","link":"https:\/\/www.xconvert.com\/blog\/understanding-audio-bitrate-and-sample-rate-how-they-impact-audio-quality-and-file-size","title":{"rendered":"Audio Bitrate vs Sample Rate: How They Set Quality and File Size"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">A 4-minute song stored as an uncompressed CD-quality WAV is about <strong>42 MB<\/strong>. The same song as a 320 kbps MP3 is about <strong>9.6 MB<\/strong>, and as a 128 kbps MP3 about <strong>3.8 MB<\/strong> \u2014 a 10x range, all from the same recording. The two numbers driving that range are <strong>bitrate<\/strong> and <strong>sample rate<\/strong>. They sound interchangeable, they\u2019re often confused, and getting them wrong is why people either bloat their files for no audible gain or crush quality to save space they didn\u2019t need to. This guide explains what each one actually controls, how they set file size with exact math, and which settings are worth keeping for music, speech, and archiving.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Quick answer:<\/strong> <strong>Sample rate<\/strong> (Hz) is how many times per second the audio is measured \u2014 44.1 kHz captures everything humans can hear (Nyquist: 2x the ~20 kHz hearing limit). <strong>Bitrate<\/strong> (kbps) is how much data per second is stored \u2014 it\u2019s the dominant lever on both quality and size. File size = bitrate \u00f7 8 \u00d7 seconds, so <strong>128 kbps \u2248 1 MB\/min, 320 kbps \u2248 2.4 MB\/min<\/strong>. For most listening, 256\u2013320 kbps at 44.1 kHz is transparent; higher sample rates mostly add size, not audible quality.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Jump to a section<\/h2>\n\n\n\n<ul class=\"wp-block-list\"><li><a href=\"#sample-rate\">Sample rate: how often the sound is measured<\/a><\/li><li><a href=\"#bit-depth\">Bit depth: how precisely each sample is measured<\/a><\/li><li><a href=\"#bitrate\">Bitrate: how much data per second is stored<\/a><\/li><li><a href=\"#file-size\">The file-size math (with exact numbers)<\/a><\/li><li><a href=\"#which\">Sample rate vs bitrate: which one to change<\/a><\/li><li><a href=\"#settings\">Recommended settings by use case<\/a><\/li><li><a href=\"#check\">How to check an existing file\u2019s bitrate and sample rate<\/a><\/li><li><a href=\"#tool\">Compress audio with xconvert<\/a><\/li><li><a href=\"#faq\">FAQ<\/a><\/li><\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"sample-rate\">Sample rate: how often the sound is measured<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Sound is a continuous wave. To store it digitally, a recorder measures the wave\u2019s amplitude at fixed intervals \u2014 each measurement is a <strong>sample<\/strong>. The <strong>sample rate<\/strong> is how many of those measurements are taken per second, in hertz (Hz) or kilohertz (kHz). A 44.1 kHz file captures 44,100 samples every second.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">How high does the sample rate need to be? The <strong>Nyquist\u2013Shannon sampling theorem<\/strong> answers this: to reconstruct a signal accurately, you must sample at more than <strong>twice<\/strong> its highest frequency. Human hearing tops out around <strong>20 kHz<\/strong>, so the theoretical minimum is 40 kHz. The CD standard of <strong>44.1 kHz<\/strong> adds a small guard band above 40 kHz so the anti-aliasing filter has room to roll off cleanly \u2014 no real-world filter cuts perfectly at 20 kHz.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Common sample rates and where they\u2019re used:<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><th>Sample rate<\/th><th>Highest frequency captured<\/th><th>Typical use<\/th><\/tr><\/thead><tbody><tr><td>8 kHz<\/td><td>4 kHz<\/td><td>Telephone \/ voice codecs<\/td><\/tr><tr><td>22.05 kHz<\/td><td>~11 kHz<\/td><td>Low-bandwidth speech<\/td><\/tr><tr><td><strong>44.1 kHz<\/strong><\/td><td>~22 kHz<\/td><td><strong>CD audio, most music<\/strong><\/td><\/tr><tr><td>48 kHz<\/td><td>24 kHz<\/td><td>Video, film, broadcast<\/td><\/tr><tr><td>96 kHz \/ 192 kHz<\/td><td>48 \/ 96 kHz<\/td><td>Studio recording, mastering<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">The practical takeaway: <strong>44.1 kHz already captures everything an adult ear can hear.<\/strong> Higher rates (96 kHz, 192 kHz) are used in studios for production headroom \u2014 pitch-shifting, time-stretching, and avoiding cumulative artifacts during mixing \u2014 but for a finished file meant for listening, they mostly add size without audible benefit. 48 kHz is the norm for anything paired with video, simply because that\u2019s the standard the film and broadcast world settled on.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"bit-depth\">Bit depth: how precisely each sample is measured<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Sample rate is <em>how often<\/em> you measure; <strong>bit depth<\/strong> is <em>how precisely<\/em> you record each measurement. It\u2019s the number of bits used to store one sample\u2019s amplitude. This is the part most \u201cbitrate vs sample rate\u201d explainers skip, and it\u2019s the missing piece that makes the math work.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Bit depth sets the <strong>dynamic range<\/strong> \u2014 the gap between the quietest and loudest sound a file can represent. Each bit adds about <strong>6 dB<\/strong> of range:<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><th>Bit depth<\/th><th>Possible values per sample<\/th><th>Dynamic range<\/th><th>Typical use<\/th><\/tr><\/thead><tbody><tr><td>16-bit<\/td><td>65,536 (2\u00b9\u2076)<\/td><td>~96 dB<\/td><td>CD audio, consumer playback<\/td><\/tr><tr><td>24-bit<\/td><td>16,777,216 (2\u00b2\u2074)<\/td><td>~144 dB<\/td><td>Studio recording, mastering<\/td><\/tr><tr><td>32-bit float<\/td><td>\u2014<\/td><td>effectively unbounded<\/td><td>DAW mixing headroom<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">16-bit\u2019s 96 dB already exceeds the usable dynamic range of nearly every listening environment (a quiet room has a noise floor well above the bottom of that range). Studios record in 24-bit for headroom during recording and mixing \u2014 when many tracks are summed, their noise floors add up \u2014 but the delivered file rarely needs more than 16-bit.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"bitrate\">Bitrate: how much data per second is stored<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Bitrate<\/strong> is the amount of data used to represent one second of audio, measured in <strong>kilobits per second (kbps)<\/strong>. It\u2019s the single biggest factor in both file size and perceived quality, and it behaves differently for uncompressed vs compressed formats.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>For uncompressed audio (WAV, AIFF, PCM),<\/strong> bitrate is derived directly from the other two numbers:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">So CD audio \u2014 44.1 kHz, 16-bit, 2 channels (stereo) \u2014 works out to:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">That <strong>1,411 kbps<\/strong> is the canonical CD-quality figure, fixed by the Philips\/Sony Red Book standard in 1980. With uncompressed audio you don\u2019t choose the bitrate; it falls out of the sample rate, bit depth, and channel count.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>For compressed audio (MP3, AAC, Ogg, Opus),<\/strong> bitrate is a target <em>you<\/em> set, and the encoder throws away data your ears are least likely to miss to hit it. This is where bitrate becomes a quality dial:<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li><strong>320 kbps<\/strong> \u2014 top quality for MP3; transparent to most listeners.<\/li><li><strong>256 kbps<\/strong> \u2014 Apple Music\u2019s standard streaming quality (AAC); transparent for nearly everyone.<\/li><li><strong>192 kbps<\/strong> \u2014 good music quality, noticeably smaller.<\/li><li><strong>128 kbps<\/strong> \u2014 the old \u201cstandard MP3\u201d; fine for casual listening, audibly thinner on complex music.<\/li><li><strong>96 kbps and below<\/strong> \u2014 speech territory; music starts to sound hollow.<\/li><\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>CBR vs VBR.<\/strong> Constant bitrate (CBR) uses the same data rate throughout \u2014 predictable size, but it wastes bits on silence and spends too few on complex passages. Variable bitrate (VBR) lets the encoder spend more on busy sections and less on simple ones, giving better quality per megabyte. For music, VBR is almost always the better choice.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Codec efficiency matters too.<\/strong> Not all kbps are equal. AAC is roughly <strong>30% more efficient<\/strong> than MP3 \u2014 128 kbps AAC is comparable to about 192 kbps MP3 \u2014 because it uses finer frequency resolution and better handles sharp transients. Opus is more efficient still, especially for speech. So \u201cwhat bitrate is enough\u201d depends on the codec, not just the number.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"file-size\">The file-size math (with exact numbers)<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">File size for a compressed file is straightforward, because bitrate <em>is<\/em> the data rate:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The \u00f7 8 converts bits to bytes. A handy shortcut falls out of it: <strong>128 kbps \u2248 1 MB per minute.<\/strong> (128,000 \u00f7 8 = 16,000 bytes\/sec \u00d7 60 = 960,000 bytes \u2248 0.96 MB.) Scale linearly from there:<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><th>Bitrate<\/th><th>Per minute<\/th><th>3-min song<\/th><th>60-min recording<\/th><\/tr><\/thead><tbody><tr><td>96 kbps<\/td><td>~0.72 MB<\/td><td>~2.2 MB<\/td><td>~43 MB<\/td><\/tr><tr><td>128 kbps<\/td><td>~0.96 MB<\/td><td>~2.9 MB<\/td><td>~58 MB<\/td><\/tr><tr><td>192 kbps<\/td><td>~1.4 MB<\/td><td>~4.3 MB<\/td><td>~86 MB<\/td><\/tr><tr><td>256 kbps<\/td><td>~1.9 MB<\/td><td>~5.8 MB<\/td><td>~115 MB<\/td><\/tr><tr><td>320 kbps<\/td><td>~2.4 MB<\/td><td>~7.2 MB<\/td><td>~144 MB<\/td><\/tr><tr><td>1,411 kbps (WAV)<\/td><td>~10.6 MB<\/td><td>~32 MB<\/td><td>~635 MB<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">(Figures use 1 MB = 1,000,000 bytes, the decimal convention shown by most operating systems and download UIs.) The pattern is clean: <strong>halve the bitrate, halve the file.<\/strong> A 320 kbps file is exactly 2.5x the size of a 128 kbps file of the same length.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Sample rate affects size too, but only for uncompressed audio, where it\u2019s baked into the bitrate. For a compressed file at a fixed bitrate, the bitrate already caps the size \u2014 lowering the sample rate then just changes how the encoder spends that fixed budget rather than shrinking the file further.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"which\">Sample rate vs bitrate: which one to change<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">When a file is too big, <strong>bitrate is almost always the right lever<\/strong>, not sample rate:<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li><strong>Bitrate<\/strong> has the most direct effect on both perceived quality and file size. Dropping from 320 to 192 kbps roughly halves the size of the data the encoder works with, with only a modest quality cost on most material.<\/li><li><strong>Sample rate<\/strong> mainly sets the <em>frequency ceiling<\/em>. Going below 44.1 kHz starts cutting high frequencies \u2014 fine for speech (lowering to 22.05 kHz keeps everything up to ~11 kHz, plenty for voice), but it dulls music. Raising it above 44.1 kHz adds size with no audible payoff for finished listening files.<\/li><\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">So: to shrink a music file, <strong>lower the bitrate (and switch stereo to mono only if it\u2019s spoken word).<\/strong> Leave the sample rate at 44.1 kHz unless it\u2019s pure speech, where 22.05 kHz mono is a legitimate extra saving.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"settings\">Recommended settings by use case<\/h2>\n\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><th>Use case<\/th><th>Bitrate<\/th><th>Sample rate<\/th><th>Channels<\/th><\/tr><\/thead><tbody><tr><td>Music, archive\/best quality<\/td><td>320 kbps (or VBR ~V0)<\/td><td>44.1 kHz<\/td><td>Stereo<\/td><\/tr><tr><td>Music, good balance<\/td><td>192\u2013256 kbps<\/td><td>44.1 kHz<\/td><td>Stereo<\/td><\/tr><tr><td>Podcast \/ spoken word<\/td><td>96\u2013128 kbps<\/td><td>44.1 kHz<\/td><td>Mono<\/td><\/tr><tr><td>Voice memo \/ lecture<\/td><td>64\u201396 kbps<\/td><td>22.05 kHz<\/td><td>Mono<\/td><\/tr><tr><td>Audio for video<\/td><td>192\u2013256 kbps AAC<\/td><td>48 kHz<\/td><td>Stereo<\/td><\/tr><tr><td>Lossless master<\/td><td>1,411 kbps (WAV\/FLAC)<\/td><td>44.1\u201396 kHz<\/td><td>Stereo<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">For reference, the streaming services land in this same range: <strong>Spotify Premium \u201cVery High\u201d is ~320 kbps<\/strong>, its web player uses <strong>256 kbps AAC<\/strong>, and <strong>Apple Music\u2019s standard quality is 256 kbps AAC<\/strong> (with optional ALAC lossless from 16-bit\/44.1 kHz up to 24-bit\/192 kHz). If 256\u2013320 kbps is good enough for the platforms that obsess over audio quality, it\u2019s good enough for almost any personal file.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"check\">How to check an existing file\u2019s bitrate and sample rate<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">You don\u2019t need special software to read these values:<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li><strong>macOS Finder:<\/strong> select the file, press Cmd+I (Get Info) \u2014 bitrate, sample rate, and channels appear under \u201cMore Info.\u201d<\/li><li><strong>Windows File Explorer:<\/strong> right-click \u2192 Properties \u2192 Details tab.<\/li><li><strong>VLC (any OS):<\/strong> open the file, then Tools \u2192 Media Information \u2192 Codec tab.<\/li><li><strong>Command line (FFmpeg):<\/strong> run <code>ffprobe yourfile.mp3<\/code> (or <code>ffmpeg -i yourfile.mp3<\/code>) to print the codec, bitrate, sample rate, and channel layout.<\/li><\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Knowing the current numbers tells you how much room you have to compress: a 44.1 kHz, 320 kbps stereo MP3 has plenty of headroom to come down; a file that\u2019s already 96 kbps mono is near the floor.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"tool\">Compress audio with xconvert<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">To change bitrate, sample rate, or channels without installing anything, use the <strong><a href=\"https:\/\/www.xconvert.com\/audio-compressor\">xconvert Audio Compressor<\/a><\/strong>. You upload the file over an encrypted connection, it\u2019s processed on our servers, and the result downloads back to you \u2014 uploaded files are deleted automatically after a few hours.<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>Pick a target bitrate (e.g. 192 kbps) or a target file size and let it choose the bitrate for you.<\/li><li>Set the sample rate (drop to 22.05 kHz for speech) and switch stereo to mono to halve voice files.<\/li><li>Works on MP3, AAC, M4A, WAV, OGG, FLAC, and more.<\/li><\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">For the most common case \u2014 shrinking an MP3 \u2014 go straight to <strong><a href=\"https:\/\/www.xconvert.com\/compress-mp3\">Compress MP3<\/a><\/strong>. And if you\u2019re trying to fit an audio file under an email cap, the step-by-step guide <strong><a href=\"https:\/\/www.xconvert.com\/blog\/compress-mp3-for-email-gmail-25mb\">Compress MP3 for Email (Gmail\u2019s 25 MB limit)<\/a><\/strong> walks through the exact bitrate and channel settings that get a long recording under the line.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"faq\">FAQ<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"faq-which-matters\">Is bitrate or sample rate more important for sound quality?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">For everyday listening, <strong>bitrate<\/strong> is the more important dial. Once your sample rate is at 44.1 kHz (which captures the full range of human hearing), raising it higher adds little audible quality. Bitrate, by contrast, directly governs how much detail the encoder preserves \u2014 the audible gap between a 128 kbps and a 320 kbps MP3 is much larger than the gap between 44.1 kHz and 96 kHz at the same bitrate.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"faq-kbps\">What does kbps mean in audio?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">kbps is <strong>kilobits per second<\/strong> \u2014 the amount of data used to store or transmit one second of audio. Higher kbps means more data per second, which generally means better quality and a larger file. It\u2019s different from kHz (sample rate, measured in thousands of samples per second). A file can be \u201c44.1 kHz, 320 kbps\u201d \u2014 two separate measurements describing different things.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"faq-cd-bitrate\">Why is CD audio 1,411 kbps?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">It\u2019s the product of the CD\u2019s three fixed parameters: 44,100 samples\/sec \u00d7 16 bits\/sample \u00d7 2 channels = 1,411,200 bits\/sec, or 1,411 kbps. Those values come from the Philips\/Sony Red Book standard (1980), which is why CD audio is uncompressed and bulky compared to an MP3 of the same song.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"faq-higher-sample-rate\">Does a higher sample rate make my audio sound better?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">For a finished file you\u2019re listening to, usually no. 44.1 kHz already captures every frequency the human ear can detect (up to ~20 kHz, per the Nyquist theorem). Higher rates like 96 kHz or 192 kHz are valuable during <em>recording and mixing<\/em> in a studio, but for playback they mainly inflate the file size without an audible improvement for most listeners.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"faq-upconvert\">Can I increase the bitrate of a compressed file to improve quality?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">No. Re-encoding a 128 kbps MP3 at 320 kbps does not restore the detail that was discarded during the first compression \u2014 it just makes a bigger file containing the same (or slightly worse) audio. Quality can only be preserved or reduced when transcoding lossy audio, never recovered. Always compress from the highest-quality source you have.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"faq-podcast\">What bitrate should I use for a podcast or voice recording?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">For spoken word, <strong>96\u2013128 kbps mono at 44.1 kHz<\/strong> is plenty \u2014 voice has a narrow frequency range and doesn\u2019t need stereo. You can go as low as 64 kbps mono for talk that prioritizes small file size over fidelity. Switching from stereo to mono alone halves the file with no audible loss on a single-voice recording.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Sources<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><em>Last verified 2026-06-17.<\/em><\/p>\n\n\n\n<ul class=\"wp-block-list\"><li><a href=\"https:\/\/support.spotify.com\/us\/article\/audio-quality\/\">Spotify \u2014 Audio quality<\/a> \u2014 streaming tier bitrates (Low 24 \/ Normal 96 \/ High 160 \/ Very High 320 kbps; web AAC 256 kbps; FLAC lossless).<\/li><li><a href=\"https:\/\/support.apple.com\/en-us\/118295\">Apple \u2014 About lossless audio in Apple Music<\/a> \u2014 ALAC resolutions from 16-bit\/44.1 kHz up to 24-bit\/192 kHz; AAC standard streaming.<\/li><li><a href=\"https:\/\/en.wikipedia.org\/wiki\/Compact_Disc_Digital_Audio\">Wikipedia \u2014 Compact Disc Digital Audio (Red Book)<\/a> \u2014 44.1 kHz \/ 16-bit \/ stereo = 1,411.2 kbps; Philips\/Sony 1980 standard. Citations trace to the IEC 60908 Red Book spec.<\/li><li><a href=\"https:\/\/en.wikipedia.org\/wiki\/Nyquist%E2%80%93Shannon_sampling_theorem\">Wikipedia \u2014 Nyquist\u2013Shannon sampling theorem<\/a> \u2014 sampling at &gt;2x the highest frequency; 44.1 kHz rationale and anti-aliasing guard band.<\/li><li><a href=\"https:\/\/en.wikipedia.org\/wiki\/Audio_bit_depth\">Wikipedia \u2014 Audio bit depth<\/a> \u2014 16-bit \u2248 96 dB and 24-bit \u2248 144 dB dynamic range; ~6 dB per bit.<\/li><li><a href=\"http:\/\/www.theaudioarchive.com\/TAA_Resources_File_Size.htm\">Audio bit-rate and file-size calculation reference (TheAudioArchive)<\/a> \u2014 file size = bitrate \u00f7 8 \u00d7 duration; ~1 MB\/min at 128 kbps.<\/li><\/ul>\n","protected":false},"excerpt":{"rendered":"<p>Bitrate (kbps) and sample rate (kHz) decide how good your audio sounds and how big the file is. See what each controls, the exact file-size math, and the best settings for music, podcasts, and archiving.<\/p>\n","protected":false},"author":1,"featured_media":280,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[14,4],"tags":[43,44,27,45],"class_list":["post-279","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-tools","category-tutorial","tag-audio","tag-bitrate","tag-ffmpeg","tag-sample-rate"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.9 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Audio Bitrate vs Sample Rate: How They Set Quality and File Size<\/title>\n<meta name=\"description\" content=\"Bitrate (kbps) and sample rate (kHz) decide how good your audio sounds and how big the file is. 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