文件列表:

BluetoothSpecFiles_new (0, 2001-05-13)
BluetoothSpecFiles_new\cvenc13b_S1020.raw (128000, 1999-09-30)
BluetoothSpecFiles_new\decode_cvsd.c (7098, 1999-09-30)
BluetoothSpecFiles_new\LPFWN_16bMS_new.raw (16002, 1999-10-21)

The following files are part of the library: cvenc13b_S1020.raw ------------------ A CVSD encoded test bit-stream. The CVSD encoder input signal, s(k), is a 1020 Hz sinusoidal sampled at ***000 Hz. The signal s(k) is in the interval [-2^12,2^12] which corresponds to a nominal input power of -15 dBm0. After sampling, the signal s(k) is fed into a reference CVSD encoder whose output bit stream constitutes this file. This signal is used to measure the difference of the nominal input and output powers. LPFWN_16bMS_new.raw ------------------- This file contains low pass filtered (3.6 kHz) white noise sampled at 8000 Hz. The signal, x(k), is in the interval [-2^15, 2^15]. This signal is used to measure the amount of high frequency noise (4-32 kHz) generated by the transmitter side. Note: The previously distributed version of this file (LPFWN_16bMS.raw) was corrupted. Replace it with this file. decode_cvsd.c ------------- This is the reference CVSD decoder to use for the measurements of the amount of HF noise that is generated by the transmitter. To compile this file you will need a license of Matlab. From a terminal window, just run: >> mex decode_cvsd.c Then, start Matlab and read the file: >> fid=fopen('cvenc13b_S1020.raw','r'); >> x=fread(fid,inf,'short'); >> y=decode_cvsd(x); >> plot(y) >> zoom Now you are able to zoom in on the received and decoded sinusoidal of 1020 Hz.

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