A friend of mine who lives in Thailand helps me to translate phrases in Thai. Today he sent me some audiofiles that I opened in Audacity for analyzing. His voice seems to be in some way distorted, or at least not clear. He has been using X-touch tab to record.
Here in Sweden my girlfriend helps me to record a woman's voice and we are using a Samsung Galaxy S3. Here the voice is almost perfect.
What I could see in Audacity is that the files where the sound is not clear have a sample rate of 8000 Hz, compared to the clear soundfiles from samsung which is 44100 Hz.
Does the lower sampling rate produce low quality sound files? I read that if one records speech, a lower sampling rate is ok.
In both cases - the amplitude resolution is the same - that is a 32 bit float.