Matt Flax <flat...@flatmax.org> writes: > On 06/07/16 21:41, Måns Rullgård wrote: >> Matt Flax <flat...@flatmax.org> writes: >> >>> On 06/07/16 17:29, Eric Wong wrote: >>>> I'm not up-to-date with the latest technology, but even 32-bit >>>> is far beyond the range of human hearing; and last I checked; >>>> available ADC/DACs can't even make full use of 24-bit (nor >>>> our ears). >>> 120 dB SPL (threshold of discomfort) is around 20 billion times louder >>> then 20 dB SPL (a whisper). That is approximately 24 bits. >>> However, we can hear down to 10 dB SPL, or lower for young people ... >>> that is approximately 40 bits of dynamic range. >> 120 dB is outright painful and damages the ears. 100 dB is already >> unpleasant. >> >> You should also check your calculations. With your limits, the required >> dynamic range would be 110 dB, which comes out to 20 bits with a bit of >> margin. >> > http://www.nal.gov.au/images/diagram-of-noise.jpg > Anything above 75 dB SPL has potential to damage your hearing, > depending on exposure time. The fact that we can hear with clarity > over such large dynamic range is extraordinary isn't it !
I tend to think it's a natural result of evolution in an environment where those sound levels occur regularly. > I think the point I am making is that you can't capture 64 bit words > of data in audio files with only 32 bit word reads/writes from file. I > wasn't aware that sox didn't have any methods for 64 bit audio data > file read and writes. From a pure data perspective, no qualms right ? Adding support for some file format with 64-bit samples is easy if you accept truncating the values to 32 bits on read and padding on write. -- Måns Rullgård ------------------------------------------------------------------------------ Attend Shape: An AT&T Tech Expo July 15-16. Meet us at AT&T Park in San Francisco, CA to explore cutting-edge tech and listen to tech luminaries present their vision of the future. This family event has something for everyone, including kids. Get more information and register today. http://sdm.link/attshape _______________________________________________ SoX-devel mailing list SoX-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/sox-devel
