Dear David:
Thanks for so soon reply.
I have checked the ADC is DC biased at half of the VCC and the voice is arround
1Vpp,and when TX in analog mode, the voice is clear with no distortion when
hear by a earphone. I haven't check the TX signal in scatter plot and together
with the SNR ,but it might be in sync state as the decoded audio is constantly
without any break, just some distortion. I will check the TX signal quality
again tonight and report to you later.
By the way, I am willing to test the 700B mode within SM1000 hardware and had
heard that the RAM of STM32F4 is not enough to alloca two sets varible for both
mode. So how about to change the code and just use the 700B mode ? Does the
hardware resource meet the requirement of the cohpsk modulation ?
Many Thanks!
James Jiang
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