diff options
Diffstat (limited to 'lab5/RTDSP/intio.c')
| -rw-r--r-- | lab5/RTDSP/intio.c | 10 |
1 files changed, 4 insertions, 6 deletions
diff --git a/lab5/RTDSP/intio.c b/lab5/RTDSP/intio.c index bbe98c0..e9c5cd7 100644 --- a/lab5/RTDSP/intio.c +++ b/lab5/RTDSP/intio.c @@ -82,8 +82,8 @@ void ISR_AIC(void); void iir_dir_form_transposed(void); /********************************** Main routine ************************************/ void main(){ - d = (double*)malloc(N * sizeof(double)); - memset(d, 0.0, N * sizeof(double)); + d = (double*)malloc((N+1) * sizeof(double)); + memset(d, 0.0, (N+1) * sizeof(double)); // initialize board and the audio port init_hardware(); @@ -142,10 +142,8 @@ void ISR_AIC() void iir_dir_form_transposed() { int i; - double y = d[0]; d[0] = b[0] * xin + d[1]; - for (i = 1; i < N-1; ++i) { - d[i] = b[i] * xin + d[i+1] - a[i] * y; + for (i = 1; i < N; ++i) { + d[i] = b[i] * xin + d[i+1] - a[i] * d[0]; } - d[N-1] = b[N-1] * xin - a[N-1] * y; } |