Re: Sampling frequency (alexander lerch )


Subject: Re: Sampling frequency
From:    alexander lerch  <lerch(at)ZPLANE.DE>
Date:    Wed, 29 Dec 2004 11:58:23 +0100

Dear Claire, Ajith, I would use other terms: 1. If the sample rate is *adjusted* without changing the samples itself, pitch and duration will be affected. 2. If the sample rate is *converted* (resampling/sample rate conversion), neither pitch nor duration will be affected. However, the quality will (at least theoretically) decrease due to the filter/interpolation algorithm used. The quality of any audio sample will never increase when converting to higher sample rates than the original sample rate. However, higher sample rates are often used in the case of non-linear processing (i.e. distortion, tube emulation, etc.) when high frequency content is generated. Best regards, Alexander Claire Piché wrote: > Dear Ajith, > > > 1. If the original recording is CONVERTED at another frequency sample > rate then the original, the pitch and duration will be affected. > > 2. If the original recording is RECORDED at another frequency sample > rate then the original, the pitch and duration will NOT be affected. > 2.1 Nevetheless, recording at a frequency sample rate lower then the > original will impoverished the quality of the timbre. > > > Claire Piché > ambiophonist > > -- dipl. ing. alexander lerch zplane.development http://www.zplane.de holsteinische str. 39-42 D-12161 berlin fon: +49.30.854 09 15.0 fax: +49.30.854 09 15.5


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