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Junior Varsity
Compression
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<blockquote data-quote="John Roberts" data-source="post: 89411" data-attributes="member: 126"><p>Re: Compression</p><p></p><p></p><p></p><p>Digital signal processing can use alternate techniques to analog to reduce artifacts of gain changes. Using simple continuous attack and release side chain algorithms creates waveform distortion (especially fast release at lower frequencies). Digital could co-ordinate step gain changes to occur at zero crossings only, so the gain step multiplied times 0v generates no artifact.</p><p></p><p>Not to repeat myself too much, to synchronize with the zero crossing at the start of a signal level change, you need to read enough about that level change that hasn't happened yet to be useful. So again that takes time (a fraction of a period at lowest dominant frequency of interest). </p><p></p><p>I am a huge fan of digital but it takes time to use time. </p><p></p><p>JR</p></blockquote><p></p>
[QUOTE="John Roberts, post: 89411, member: 126"] Re: Compression Digital signal processing can use alternate techniques to analog to reduce artifacts of gain changes. Using simple continuous attack and release side chain algorithms creates waveform distortion (especially fast release at lower frequencies). Digital could co-ordinate step gain changes to occur at zero crossings only, so the gain step multiplied times 0v generates no artifact. Not to repeat myself too much, to synchronize with the zero crossing at the start of a signal level change, you need to read enough about that level change that hasn't happened yet to be useful. So again that takes time (a fraction of a period at lowest dominant frequency of interest). I am a huge fan of digital but it takes time to use time. JR [/QUOTE]
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