From: John Rigg <ad@sound-man.co.uk>
To: Marc Brooker <marcbrooker@gmail.com>
Cc: alsa-devel@lists.sourceforge.net
Subject: Re: Sample Rate Conversion Quality in ALSA
Date: Mon, 21 Aug 2006 16:03:38 +0100 [thread overview]
Message-ID: <20060821150338.GA3360@localhost.localdomain> (raw)
In-Reply-To: <b5ee41f40608210602q4c4ae45eo5be8392be7e96099@mail.gmail.com>
On Mon, Aug 21, 2006 at 03:02:07PM +0200, Marc Brooker wrote:
> Let me see if I understand you correctly. In the scenario that you
> presented the application is told that there are 940 samples per
> period. ALSA, internally, converts these to 1024 samples per period at
> 48kHz sample rate. So the material (sampled at 44100Hz) is played back
> at a rate of 44062Hz? I don't know enough about the field to know if
> this error (0.08%) will be audible.
To put that in perspective, a semitone is around 6% change in pitch.
The error here looks small at 0.08% but it's enough to make a musical
note sound out of tune.
John
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next prev parent reply other threads:[~2006-08-21 15:03 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-08-21 10:16 Sample Rate Conversion Quality in ALSA Marc Brooker
2006-08-21 12:45 ` James Courtier-Dutton
2006-08-21 12:54 ` Takashi Iwai
2006-08-21 15:05 ` Marc Brooker
2006-08-21 15:16 ` Takashi Iwai
2006-08-21 15:59 ` Lee Revell
2006-08-21 16:06 ` Takashi Iwai
2006-08-21 13:02 ` Marc Brooker
2006-08-21 15:03 ` John Rigg [this message]
2006-08-21 19:07 ` Marc Brooker
2006-08-21 19:15 ` Lee Revell
2006-08-21 20:16 ` Marc Brooker
2006-08-21 20:15 ` John Rigg
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