{"id":925,"date":"2026-07-07T09:13:00","date_gmt":"2026-07-07T13:13:00","guid":{"rendered":"https:\/\/www.xconvert.com\/blog\/?p=925"},"modified":"2026-06-27T01:37:27","modified_gmt":"2026-06-27T05:37:27","slug":"make-audio-lower-quality-on-purpose","status":"publish","type":"post","link":"https:\/\/www.xconvert.com\/blog\/make-audio-lower-quality-on-purpose","title":{"rendered":"How to Make Audio Lower Quality on Purpose"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">You want audio that sounds <em>worse<\/em> \u2014 on purpose. Maybe it\u2019s a deep-fried meme that needs to crunch, a voiceover that should sound like it\u2019s coming through a 1940s radio, or a clip that has to read as a tinny phone call. \u201cLow quality\u201d isn\u2019t a single effect: it\u2019s a handful of specific levers \u2014 bitrate, sample rate, and channel count \u2014 that each remove something different from the sound. Pull the right ones in the right amounts and you get the exact flavour of bad you\u2019re after, repeatably, instead of randomly mangling the file. We verified the technical numbers below (the telephone band, the 8 kHz sample-rate math, the AMR codec range) against the standards and reference docs.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Quick answer:<\/strong> To degrade audio deliberately, lower three things: <strong>bitrate<\/strong> (drop to 64 kbps or far below for crunchy compression artifacts), <strong>sample rate<\/strong> (set <strong>8000 Hz<\/strong> for the classic muffled telephone\/lo-fi sound \u2014 it hard-caps audio at 4 kHz), and <strong>channels<\/strong> (switch to <strong>mono<\/strong>). For a phone-call voice, 8 kHz mono at a low bitrate gets you most of the way; the real telephone band is roughly <strong>300\u20133400 Hz<\/strong>. For a deep-fried meme, push the bitrate as low as it goes and re-encode. Do it in one pass with an <a href=\"https:\/\/www.xconvert.com\/compress-mp3\">MP3 compressor<\/a>.<\/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=\"#levers\">The three levers that degrade audio<\/a><\/li><li><a href=\"#sample-rate\">Sample rate: the muffled, telephone sound<\/a><\/li><li><a href=\"#bitrate\">Bitrate: the crunchy, artifact sound<\/a><\/li><li><a href=\"#recipes\">Recipes for specific effects<\/a><\/li><li><a href=\"#tool\">Make audio lower quality on xconvert<\/a><\/li><li><a href=\"#faq\">FAQ<\/a><\/li><\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"levers\">The three levers that degrade audio<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u201cAudio quality\u201d isn\u2019t one dial. When you lower quality intentionally, you\u2019re really touching three independent properties, and each one ruins the sound in a distinct, recognisable way:<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li><strong>Sample rate<\/strong> \u2014 how many times per second the audio is measured, in Hz. By the <strong>Nyquist\u2013Shannon theorem<\/strong>, the highest frequency a file can represent is exactly <strong>half the sample rate<\/strong>. CD audio is 44,100 Hz (44.1 kHz), so it reaches up to ~22 kHz \u2014 past human hearing. Drop the sample rate and you chop off the top of the frequency range: the sound gets darker, thinner, more <em>muffled<\/em>.<\/li><li><strong>Bitrate<\/strong> \u2014 how many bits per second the (lossy) encoder is allowed to spend, in kbps. Lower it and the encoder throws away more detail, producing audible <strong>compression artifacts<\/strong>: warbling, metallic ringing, swirly \u201cunderwater\u201d textures. This is the <em>crunchy<\/em> kind of bad.<\/li><li><strong>Channels<\/strong> \u2014 stereo (two channels) vs <strong>mono<\/strong> (one). Folding to mono flattens the stereo image and removes the sense of space, and roughly halves the data.<\/li><\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">For a deeper, neutral explanation of how these interact, see <a href=\"https:\/\/www.xconvert.com\/blog\/understanding-audio-bitrate-and-sample-rate-how-they-impact-audio-quality-and-file-size\/\">understanding audio bitrate and sample rate<\/a>. Here we\u2019re using them as weapons, not avoiding them.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"sample-rate\">Sample rate: the muffled, telephone sound<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">This is the lever most people don\u2019t know about, and it\u2019s the one that delivers the iconic \u201cphone call\u201d and \u201cold radio\u201d character.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Set the sample rate to <strong>8000 Hz (8 kHz)<\/strong> and, per Nyquist, the file can no longer carry any frequency above <strong>4000 Hz<\/strong>. Everything brighter \u2014 the sparkle of cymbals, the air of a voice, sibilant \u201cs\u201d sounds \u2014 is gone. That\u2019s not a coincidence: <strong>8 kHz is the sample rate the telephone network itself uses<\/strong> (the ITU-T G.711 PCM standard), precisely because human speech stays intelligible inside a narrow band. The classic telephone passband runs roughly <strong>300 Hz to 3400 Hz<\/strong>, which is why phone calls sound thin and boxy but you can still understand the words.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">A quick map of what each sample rate does to perceived quality:<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><th>Sample rate<\/th><th>Max frequency (Nyquist)<\/th><th>Character<\/th><\/tr><\/thead><tbody><tr><td>44,100 Hz (CD)<\/td><td>~22,050 Hz<\/td><td>Full, normal \u201cgood\u201d audio<\/td><\/tr><tr><td>22,050 Hz<\/td><td>~11,025 Hz<\/td><td>Slightly dull, \u201cAM radio\u201d-ish<\/td><\/tr><tr><td>16,000 Hz<\/td><td>8,000 Hz<\/td><td>\u201cWideband\u201d voice; noticeably reduced highs<\/td><\/tr><tr><td>11,025 Hz<\/td><td>~5,512 Hz<\/td><td>Vintage, lo-fi, retro<\/td><\/tr><tr><td><strong>8,000 Hz<\/strong><\/td><td><strong>4,000 Hz<\/strong><\/td><td><strong>Telephone \/ muffled \/ lo-fi<\/strong><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">The lower you go, the more of the high end disappears and the more \u201ctransmitted through a tin can\u201d it sounds. 8 kHz is the sweet spot for phone and lo-fi effects; 11,025 Hz is a gentler vintage feel.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"bitrate\">Bitrate: the crunchy, artifact sound<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Sample rate removes the <em>highs<\/em>; low bitrate adds <em>garbage<\/em>. A lossy encoder (MP3, AAC) at a low bitrate has to represent the audio with very few bits, so it approximates aggressively \u2014 and you hear those approximations as artifacts.<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li><strong>128 kbps and up<\/strong> \u2014 generally \u201ctransparent\u201d enough that most people don\u2019t notice degradation on a typical track.<\/li><li><strong>64 kbps<\/strong> \u2014 clearly compressed; a hollow, slightly swirly quality creeps in. Good for a mild \u201clow-quality download\u201d feel.<\/li><li><strong>32 kbps and below<\/strong> \u2014 heavy, obvious warbling and metallic ringing. This is the <em>crunchy<\/em> sound, and it\u2019s the backbone of the <strong>deep-fried meme<\/strong> aesthetic.<\/li><li><strong>Re-encoding the same file repeatedly<\/strong> at low bitrate compounds the damage \u2014 each pass loses more, so the \u201cJPEG-artifacts-but-for-audio\u201d effect intensifies.<\/li><\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">If your goal is simply a smaller, lower-bitrate file (not a cartoonish effect), the focused walkthrough is <a href=\"https:\/\/www.xconvert.com\/blog\/lower-the-bitrate-of-an-audio-file\/\">lower the bitrate of an audio file<\/a>. For deliberate degradation, just push the same control further than you normally would.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">A note on the genuinely <em>destroyed<\/em> deep-fried sound: the most extreme examples combine a very low bitrate with <strong>digital clipping<\/strong> \u2014 amplifying the signal past the 0 dBFS maximum so the waveform\u2019s peaks get flattened into a square-ish shape, adding harsh distortion on top of the artifacts. Bitrate and sample rate get the recognisable \u201clow quality\u201d sound; clipping (an editor\u2019s gain or distortion control) takes it all the way to \u201cearrape.\u201d<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"recipes\">Recipes for specific effects<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Concrete starting points. Treat the numbers as a baseline and adjust to taste.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Phone-call voice (&#x260e;&#xfe0f;)<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>Sample rate: <strong>8000 Hz<\/strong><\/li><li>Channels: <strong>mono<\/strong><\/li><li>Bitrate: <strong>24\u201348 kbps<\/strong><\/li><li>Why: 8 kHz mono mimics the telephone network\u2019s own format; the result naturally lands near the 300\u20133400 Hz telephone band, so the voice sounds tinny and \u201cdown the line.\u201d The dedicated <strong>AMR<\/strong> speech codec used by old mobile phones runs at exactly 8 kHz and 4.75\u201312.2 kbps \u2014 so a very low bitrate here is authentic, not just lazy.<\/li><\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Vintage radio \/ old recording<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>Sample rate: <strong>11,025 Hz<\/strong> (or 8000 Hz for a harsher era)<\/li><li>Channels: <strong>mono<\/strong><\/li><li>Bitrate: <strong>48\u201364 kbps<\/strong><\/li><li>Why: the reduced sample rate strips the highs for that dusty, archival feel without going full telephone; mono suits the period.<\/li><\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Lo-fi \/ \u201cpotato quality\u201d background<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>Sample rate: <strong>22,050 Hz<\/strong> or <strong>11,025 Hz<\/strong><\/li><li>Channels: <strong>mono<\/strong> or stereo<\/li><li>Bitrate: <strong>64 kbps<\/strong><\/li><li>Why: enough degradation to read as deliberately lo-fi, while staying listenable as a backing layer.<\/li><\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Deep-fried meme (crunch)<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>Sample rate: <strong>8000 Hz<\/strong> (or lower)<\/li><li>Channels: <strong>mono<\/strong><\/li><li>Bitrate: <strong>as low as it goes<\/strong> (16\u201332 kbps)<\/li><li>Then: re-encode the output again at the same low bitrate to stack artifacts; for the truly fried sound, boost the volume past clipping in an editor first.<\/li><\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"tool\">Make audio lower quality on xconvert<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">The <a href=\"https:\/\/www.xconvert.com\/compress-mp3\">xconvert MP3 compressor<\/a> exposes the exact levers above \u2014 bitrate, sample rate, and channels \u2014 in one place, so you can dial in any of the recipes:<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1600\" height=\"1250\" src=\"https:\/\/www.xconvert.com\/blog\/wp-content\/uploads\/2026\/06\/step-01-control-25.png\" alt=\"Set a very low bitrate (32 kbps) for the crunchy, deep-fried sound\" class=\"wp-image-1220\" srcset=\"https:\/\/www.xconvert.com\/blog\/wp-content\/uploads\/2026\/06\/step-01-control-25.png 1600w, https:\/\/www.xconvert.com\/blog\/wp-content\/uploads\/2026\/06\/step-01-control-25-300x234.png 300w, https:\/\/www.xconvert.com\/blog\/wp-content\/uploads\/2026\/06\/step-01-control-25-1024x800.png 1024w, https:\/\/www.xconvert.com\/blog\/wp-content\/uploads\/2026\/06\/step-01-control-25-768x600.png 768w, https:\/\/www.xconvert.com\/blog\/wp-content\/uploads\/2026\/06\/step-01-control-25-1536x1200.png 1536w\" sizes=\"auto, (max-width: 1600px) 100vw, 1600px\" \/><\/figure>\n\n\n\n<ol class=\"wp-block-list\"><li>Open <a href=\"https:\/\/www.xconvert.com\/compress-mp3\">xconvert.com\/compress-mp3<\/a> and click <strong>Upload<\/strong> to add your file (From my Computer, Google Drive, or Dropbox).<\/li><li>Open <strong>Advanced Options<\/strong> (the gear).<\/li><li>For the crunch, choose <strong>Custom Bitrate<\/strong> and set a low value \u2014 64 kbps for mild, 32 kbps or lower for deep-fried. (Or use <strong>Specific file size<\/strong> to force a tiny target, which has the same effect.)<\/li><li>Set <strong>Audio Sample Rate<\/strong> to <strong>8000 Hz<\/strong> for the muffled telephone\/lo-fi sound (it defaults to ORIGINAL). Try 11025 Hz for a gentler vintage feel.<\/li><li>Set <strong>Audio Channel<\/strong> to <strong>mono<\/strong> to flatten the stereo image and complete the phone-call effect.<\/li><li>Click <strong>Compress<\/strong>, then download. Run the output back through again if you want to stack the degradation.<\/li><\/ol>\n\n\n\n<p class=\"wp-block-paragraph\">Your file uploads over an encrypted connection, is processed on our servers, and is deleted automatically a few hours later. Nothing stays around.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">For the non-destructive versions of these controls, see <a href=\"https:\/\/www.xconvert.com\/blog\/understanding-audio-bitrate-and-sample-rate-how-they-impact-audio-quality-and-file-size\/\">understanding audio bitrate and sample rate<\/a> and <a href=\"https:\/\/www.xconvert.com\/blog\/lower-the-bitrate-of-an-audio-file\/\">lower the bitrate of an audio file<\/a>.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"faq\">FAQ<\/h2>\n\n\n\n<h5 class=\"wp-block-heading\">How do I make audio sound like a phone call?<\/h5>\n\n\n\n<p class=\"wp-block-paragraph\">Set the <strong>sample rate to 8000 Hz<\/strong>, switch to <strong>mono<\/strong>, and use a <strong>low bitrate<\/strong> (around 24\u201348 kbps). The 8 kHz sample rate matches the telephone network\u2019s own format and caps the audio at 4 kHz, which is what makes a phone call sound thin and boxy. The real telephone passband is roughly <strong>300\u20133400 Hz<\/strong>. For an even more \u201cdown the line\u201d result, a steep EQ that cuts below ~300 Hz and above ~3.4 kHz in an audio editor nails the band exactly.<\/p>\n\n\n\n<h5 class=\"wp-block-heading\">What sample rate makes audio sound low quality?<\/h5>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>8000 Hz (8 kHz)<\/strong> is the classic low-quality \/ telephone setting \u2014 by the Nyquist theorem it removes every frequency above <strong>4000 Hz<\/strong>, stripping all the brightness and sparkle. <strong>11,025 Hz<\/strong> gives a milder vintage\/lo-fi feel. Anything at or below 8 kHz reads clearly as \u201cdegraded.\u201d<\/p>\n\n\n\n<h5 class=\"wp-block-heading\">What bitrate is considered bad or low quality?<\/h5>\n\n\n\n<p class=\"wp-block-paragraph\">Below about <strong>64 kbps<\/strong> audio sounds noticeably compressed, and at <strong>32 kbps or lower<\/strong> you get obvious warbling and metallic artifacts \u2014 the \u201ccrunchy\u201d sound. By contrast, <strong>128 kbps and up<\/strong> is usually transparent enough that most listeners don\u2019t notice. For a deliberate effect, push the bitrate well under 64 kbps.<\/p>\n\n\n\n<h5 class=\"wp-block-heading\">How do I make deep-fried meme audio?<\/h5>\n\n\n\n<p class=\"wp-block-paragraph\">Stack the degradation: <strong>8 kHz sample rate<\/strong>, <strong>mono<\/strong>, and the <strong>lowest bitrate<\/strong> you can set (16\u201332 kbps), then <strong>re-encode the result again<\/strong> at that low bitrate to compound the artifacts. The truly \u201cfried\u201d sound also involves <strong>digital clipping<\/strong> \u2014 boosting the volume past the 0 dBFS maximum in an editor so the waveform flattens and distorts. Bitrate plus sample rate gets the recognisable crunch; clipping takes it to the extreme.<\/p>\n\n\n\n<h5 class=\"wp-block-heading\">Does converting to mono lower the quality?<\/h5>\n\n\n\n<p class=\"wp-block-paragraph\">It changes the <em>character<\/em> more than the fidelity. <strong>Mono<\/strong> collapses the left and right channels into one, removing the stereo image and sense of space \u2014 which is exactly what you want for a phone-call or old-recording effect. It also roughly halves the data, so combined with a low bitrate it pushes quality down further.<\/p>\n\n\n\n<h5 class=\"wp-block-heading\">Can I get the real \u201cold mobile phone\u201d voice codec?<\/h5>\n\n\n\n<p class=\"wp-block-paragraph\">That sound comes from <strong>AMR<\/strong> (Adaptive Multi-Rate), the narrowband speech codec used by 2G\/3G phones \u2014 it runs at <strong>8000 Hz<\/strong> and <strong>4.75\u201312.2 kbps<\/strong>, covering roughly the 300\u20133400 Hz voice band. You can approximate it closely with an MP3 at 8 kHz, mono, and a very low bitrate; the result sounds authentically tinny and compressed.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Sources<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><em>Last verified 2026-06-25.<\/em><\/p>\n\n\n\n<ul class=\"wp-block-list\"><li><a href=\"https:\/\/developer.mozilla.org\/en-US\/docs\/Web\/Media\/Guides\/Formats\/Audio_concepts\">MDN \u2014 Digital audio concepts (sample rate, Nyquist, bit rate)<\/a> \u2014 confirms the Nyquist theorem (max frequency = half the sample rate), 8000 Hz as the telephone\/VoIP rate, and that lower bitrate means more compression artifacts.<\/li><li><a href=\"https:\/\/en.wikipedia.org\/wiki\/Voice_frequency\">Wikipedia \u2014 Voice frequency<\/a> \u2014 telephone voice band of ~300\u20133400 Hz and the 8 kHz sampling rate (cites the underlying ITU-T standards).<\/li><li><a href=\"https:\/\/en.wikipedia.org\/wiki\/Adaptive_Multi-Rate_audio_codec\">Wikipedia \u2014 Adaptive Multi-Rate audio codec (AMR)<\/a> \u2014 AMR narrowband: 8 kHz sample rate, 4.75\u201312.2 kbit\/s, 200\u20133400 Hz, optimised for speech.<\/li><li><a href=\"https:\/\/ledgernote.com\/columns\/studio-recording\/audio-clipping\/\">LedgerNote \u2014 What is audio clipping<\/a> \u2014 digital clipping at 0 dBFS flattens waveform peaks into distortion (the deep-fried\/earrape mechanism).<\/li><\/ul>\n","protected":false},"excerpt":{"rendered":"<p>Make audio low quality on purpose: lower the bitrate, set 8 kHz sample rate, and go mono for phone-call, lo-fi, vintage radio, and deep-fried meme effects.<\/p>\n","protected":false},"author":3,"featured_media":1222,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[5,14],"tags":[],"class_list":["post-925","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-how-to-guides","category-tools"],"yoast_head":"<!-- This site is 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