[Elecraft] How to record Audio on K3

Tom Hammond n0ss at embarqmail.com
Tue Mar 31 11:35:15 EDT 2009


One item which has (i believe) been touched upon, but may not have been
explained deeply enough is the SIZE of the resulting audio file if you
use the default record settings often offered by many (most) audio
recording softwares.

I've found that it's not necessary to use the highest fidelity recording
parameters when recording SSB voice or CW... and possibly digital as well.

Quite often your recording software will default to record parameters like

   Record Sample Rate:  44,100 samples/sec

        Sample Format:  32-bit float

   Recording Channels:  Stereo

        Export Format:  WAV (Microsoft 16 bit PCM)

Using these defaults will result in a very large (many MB per minute 
of 
record time) WAV file, even if you only record for 1 minute... .

IF given the opportunity to change these defaults, I'll try to select:

   Record Sample Rate:  11,025 samples/sec

        Sample Format:  16-bit (even 8-bit if available)

   Recording Channels:  Mono

        Export Format:  WAV (Microsoft 8 bit PCM)

These settings will result in a very usable quality recording and at about
10% the file size of the default... usually 4 MB for a 5-minute recording.

Just a thought!

73,

Tom Hammond   N0SS



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