kjs field recording sourcebook, 4.4 Bit Rate calculation

Field Recording Sourcebook..

Bit Rate calculation

(Uncompressed Format) bit rate=bitspersample (16-bit or 24-bit)samplespersec(44.1KHz-48KHz)no.of channels. Example 16-bit 48Khz strereo contains bitrate of 1.5Mb/sec. File size calculation For Uncompressed Format file size=((bitspersample(16-bit or 24-bit)samplespersec(44.1KHz-48KHz)no.of channelsduration(no.of sec the music played))/8. Example 16-bit 44.1Khz stereo for 60 min the file size is 630MB. For Compressed Format File size=((bit rate in kbps)(length of the audio in sec))/8 Example 16 bit 44.1Khz stereo for 60min at 128Kbps the file size is 10.8MB
For live streaming the bandwidth required can be calculated using the formula: bandwidth=listenersbit ratelength(audio length per day)*no. of days. The bandwidth required for bit rate of 128Kbps is 57.6MB/hr. Table Representing the bandwidth for various Bitrates The length of the file is taken as 60min(180 sec).

KJS 04/2025

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