Subject:message formats

Posted by: DGW

Date:11/28/2008 8:02:16 AM

Is it possible to save a file in the following format? Everything is fine other than the Data Rate, which I cannot get below 64kbps.

Audio Format: PCM
Average Data Rate: 8.00kb/second
Sample Rate: 8.00kHz
Audio Sample Size: 8bit
Channels: 1(mono)

Subject:RE: message formats

Reply by: musicvid10

Date:11/28/2008 8:18:44 AM

The PCM data rate, also called bitrate (Kilobits/sec) is arrived at by multiplying the

Sample Rate x Bit Depth x Number of Channels

So, 8 x 8 x 1 = 64 Kbs

That is not quite the same as setting the data rate for compressed file formats like mp3.

Subject:RE: message formats

Reply by: DGW

Date:11/28/2008 8:37:41 AM

What you responded with is what I thought too, I unfortunately have a customer who subscribes to different laws of physics than the rest of us:-) I'm thankful to hear someone else agrees with me. Thanks!

Subject:RE: message formats

Reply by: musicvid10

Date:11/28/2008 8:52:48 AM

PCM is an uncompressed format.
Your customer is thinking of other formats, where compression is also a factor.

Subject:RE: message formats

Reply by: MarkWWW

Date:11/28/2008 9:04:13 AM

64kbps means 64000 bits per second.

I'm guessing that your customer is confusing bits with bytes.

64kbps would be 8kBps (where b means bit and B means Byte).

Mark

Subject:RE: message formats

Reply by: DGW

Date:12/2/2008 8:51:36 AM

Ahhhhh, didn't think of that. Thanks!