[Icc-avr] Off topic question

John Baraclough j_baraclough at zetnet.co.uk
Sat Jul 12 11:21:48 PDT 2008


Sorry about being a little off topic, but the list has been very quiet 
recently and I thought this would be the most likely place to get a 
sensible answer to my problem.

I am building a unique metronome to use when practising Taiko drumming. 
It has red & green LEDs which indicate the hands and the brightness of 
the LEDs will indicate the strength of the beats. Everything so far is 
easy, but I want to add a 'voice' to it, and I think that PCM sampled at 
8kHz and 8-bits will be perfectly adequate for my purpose. I will be 
using a MAX522 SPI DAC as I already have these parts from another project.

So here's the question. How do I record speech at 8-bit resolution using 
a PC? I have the Audacity audio editing package and it will record at 
8kHz sampling but only at a minimum of 16-bit resolution. Can anyone 
give me a link some software which can reduce a 16-bit WAV file to only 
8-bits so that I can extract the data and programme an external EEPROM.

Thanks for reading.

All the best for now,
John  



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