Comments on: Everything about File Compression: Take 2 https://thestudiofiles.com/?p=348 Helping You Make It Happen Wed, 22 Jul 2026 15:22:06 +0000 hourly 1 http://wordpress.org/?v=3.9.3 By: ConnorSmith https://thestudiofiles.com/?p=348&cpage=1#comment-1929 Sun, 23 Nov 2008 18:04:57 +0000 http://thestudiofiles.com/?p=348#comment-1929 Finished an article on the problems inherent to current lossy compression encoders

http://thestudiofiles.com/?p=525

]]> By: ConnorSmith https://thestudiofiles.com/?p=348&cpage=1#comment-1926 Sun, 23 Nov 2008 16:44:54 +0000 http://thestudiofiles.com/?p=348#comment-1926 The “birdies” appear as a result of a few things

1) Pre-echo and time smearing (which, I don’t think I talked about pre-echo). I’ll an article today.

2) The encoder runs out of bits, and so it basically lo-passes the high frequencies

3) The encoder runs out of bits, and so it can’t raise the bits of the “good” high frequency information above the noise floor/yuck.

The quintessential example of birdie-like things is anything on YouTube. The metallic, high-frequency warblings are a result of similar events.

]]> By: alex https://thestudiofiles.com/?p=348&cpage=1#comment-1900 Sun, 23 Nov 2008 06:25:09 +0000 http://thestudiofiles.com/?p=348#comment-1900 So when an mp3 de-emphsizes high frequencies, is that why open hi-hats often sound watery? The cymbals are always a give away to me on whether someone ripped a really low bitrate mp3.

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