def __cqt_response(y, n_fft, hop_length, fft_basis, mode):
<EOL>D = stft(y, n_fft=n_fft, hop_length=hop_length,<EOL>window='<STR_LIT>',<EOL>pad_mode=mode)<EOL>return fft_basis.dot(D)<EOL>
Compute the filter response with a target STFT hop.