From 0f01e44455d7e70fd64e88c8e410cd40fbd2a2d0 Mon Sep 17 00:00:00 2001 From: Jamie Bullock Date: Mon, 19 Mar 2007 18:58:21 +0000 Subject: Further updated xtract_spectrum() to hopefully fix fft iteration bug and nyquist/DC inclusion. Added new boolean argument 'withDC' to select whether the DC component is required in the output --- xtract/xtract_vector.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'xtract/xtract_vector.h') diff --git a/xtract/xtract_vector.h b/xtract/xtract_vector.h index d93f953..a3db0bd 100644 --- a/xtract/xtract_vector.h +++ b/xtract/xtract_vector.h @@ -38,7 +38,7 @@ extern "C" { * * \param *data: a pointer to the first element in an array of floats representing an audio vector * \param N: the number of array elements to be considered - * \param *argv: a pointer to an array of floats, the first representing (samplerate / N), the second will be cast to an integer and determines the spectrum type (e.g. XTRACT_MAGNITUDE_SPECTRUM, XTRACT_LOG_POWER_SPECTRUM) + * \param *argv: a pointer to an array of floats, the first representing (samplerate / N), the second will be cast to an integer and determines the spectrum type (e.g. XTRACT_MAGNITUDE_SPECTRUM, XTRACT_LOG_POWER_SPECTRUM). An optional third argument determines whether or not the DC component is included in the output. If argv[2] == 1, then the DC component is included in which case the size of the array pointed to by *result must be N+2. For any further use of the array pointed to by *result, the value of N must reflect the (larger) array size. * \param *result: a pointer to an array of size N containing N/2 magnitude/power/log magnitude/log power coefficients and N/2 bin frequencies. */ int xtract_spectrum(const float *data, const int N, const void *argv, float *result); -- cgit v1.2.3