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resample: tweak cutoff some more
Increase the cutoff frequency for the lower quality modes. This should give significantly better high frequency preservation at the expense of more (but likely inaudible) aliasing. Reduce the cutoff for the higher qualities in blackman and exp to compensate the the wider transition band in those windows. Increase cutoff for kaiser because of the sharper rolloff.
This commit is contained in:
Wim Taymans
parent
4760fd7f52
commit
7d5940101b
1 changed files with 45 additions and 45 deletions
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@ -33,21 +33,21 @@ struct window_info {
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struct window_info window_info[];
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static const struct quality blackman_qualities[] = {
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{ 8, 0.53, 0.53, { 0.16, }},
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{ 16, 0.67, 0.67, { 0.20, }},
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{ 24, 0.75, 0.75, { 0.16, }},
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{ 32, 0.80, 0.80, { 0.16, }},
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{ 48, 0.85, 0.85, { 0.16, }}, /* default */
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{ 64, 0.88, 0.88, { 0.16, }},
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{ 80, 0.895, 0.895, { 0.16, }},
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{ 96, 0.910, 0.910, { 0.16, }},
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{ 128, 0.936, 0.936, { 0.16, }},
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{ 144, 0.945, 0.945, { 0.16, }},
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{ 160, 0.950, 0.950, { 0.16, }},
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{ 192, 0.960, 0.960, { 0.16, }},
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{ 256, 0.970, 0.970, { 0.16, }},
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{ 896, 0.990, 0.990, { 0.16, }},
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{ 1024, 0.995, 0.995, { 0.16, }},
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{ 8, 0.58, 0.58, { 0.16, }},
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{ 16, 0.70, 0.70, { 0.20, }},
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{ 24, 0.77, 0.77, { 0.16, }},
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{ 32, 0.82, 0.82, { 0.16, }},
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{ 48, 0.87, 0.87, { 0.16, }}, /* default */
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{ 64, 0.895, 0.895, { 0.16, }},
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{ 80, 0.910, 0.910, { 0.16, }},
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{ 96, 0.925, 0.925, { 0.16, }},
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{ 128, 0.942, 0.942, { 0.16, }},
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{ 144, 0.950, 0.950, { 0.16, }},
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{ 160, 0.958, 0.958, { 0.16, }},
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{ 192, 0.966, 0.966, { 0.16, }},
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{ 256, 0.975, 0.975, { 0.16, }},
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{ 896, 0.988, 0.988, { 0.16, }},
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{ 1024, 0.990, 0.990, { 0.16, }},
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};
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static inline void blackman_window(struct resample *r, double *w, double t, uint32_t n_taps)
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@ -67,21 +67,21 @@ static inline void blackman_config(struct resample *r)
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}
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static const struct quality exp_qualities[] = {
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{ 8, 0.53, 0.53, { 16.97789, }},
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{ 16, 0.67, 0.67, { 16.97789, }},
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{ 24, 0.75, 0.75, { 16.97789, }},
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{ 32, 0.80, 0.80, { 16.97789, }},
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{ 48, 0.85, 0.85, { 16.97789, }}, /* default */
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{ 64, 0.88, 0.88, { 16.97789, }},
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{ 80, 0.895, 0.895, { 16.97789, }},
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{ 96, 0.910, 0.910, { 16.97789, }},
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{ 128, 0.936, 0.936, { 16.97789, }},
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{ 144, 0.945, 0.945, { 16.97789, }},
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{ 160, 0.950, 0.950, { 16.97789, }},
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{ 192, 0.960, 0.960, { 16.97789, }},
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{ 256, 0.970, 0.970, { 16.97789, }},
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{ 896, 0.990, 0.990, { 16.97789, }},
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{ 1024, 0.995, 0.995, { 16.97789, }},
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{ 8, 0.58, 0.58, { 16.97789, }},
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{ 16, 0.70, 0.70, { 16.97789, }},
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{ 24, 0.77, 0.77, { 16.97789, }},
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{ 32, 0.82, 0.82, { 16.97789, }},
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{ 48, 0.87, 0.87, { 16.97789, }}, /* default */
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{ 64, 0.895, 0.895, { 16.97789, }},
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{ 80, 0.910, 0.910, { 16.97789, }},
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{ 96, 0.925, 0.925, { 16.97789, }},
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{ 128, 0.942, 0.942, { 16.97789, }},
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{ 144, 0.950, 0.950, { 16.97789, }},
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{ 160, 0.958, 0.958, { 16.97789, }},
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{ 192, 0.966, 0.966, { 16.97789, }},
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{ 256, 0.975, 0.975, { 16.97789, }},
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{ 896, 0.988, 0.988, { 16.97789, }},
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{ 1024, 0.990, 0.990, { 16.97789, }},
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};
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static inline void exp_window(struct resample *r, double *w, double t, uint32_t n_taps)
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@ -104,21 +104,21 @@ static inline void exp_config(struct resample *r)
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#include "dbesi0.c"
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static const struct quality kaiser_qualities[] = {
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{ 8, 0.600000, 0.600000, { 3.553376, 110.000000, 0.888064 }},
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{ 16, 0.770000, 0.770000, { 3.553376, 110.000000, 0.444032 }},
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{ 24, 0.800000, 0.800000, { 3.904154, 120.000000, 0.325043 }},
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{ 32, 0.850000, 0.850000, { 4.254931, 130.000000, 0.265548 }},
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{ 48, 0.880000, 0.880000, { 4.254931, 130.000000, 0.177032 }},
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{ 64, 0.900000, 0.900000, { 4.254931, 130.000000, 0.132774 }},
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{ 80, 0.910000, 0.910000, { 4.254931, 130.000000, 0.106219 }},
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{ 96, 0.930000, 0.930000, { 4.254931, 130.000000, 0.088516 }},
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{ 128, 0.940000, 0.940000, { 4.254931, 130.000000, 0.066387 }},
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{ 160, 0.950000, 0.950000, { 4.254931, 130.000000, 0.053110 }},
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{ 192, 0.960000, 0.960000, { 4.254931, 130.000000, 0.044258 }},
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{ 256, 0.970000, 0.970000, { 4.605709, 140.000000, 0.035914 }},
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{ 512, 0.980000, 0.980000, { 4.781097, 145.000000, 0.018637 }},
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{ 768, 0.985000, 0.985000, { 4.956486, 150.000000, 0.012878 }},
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{ 1024, 0.990000, 0.990000, { 5.131875, 155.000000, 0.009999 }},
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{ 8, 0.620000, 0.620000, { 3.553376, 110.000000, 0.888064 }},
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{ 16, 0.780000, 0.780000, { 3.553376, 110.000000, 0.444032 }},
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{ 24, 0.820000, 0.820000, { 3.904154, 120.000000, 0.325043 }},
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{ 32, 0.865000, 0.865000, { 4.254931, 130.000000, 0.265548 }},
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{ 48, 0.895000, 0.895000, { 4.254931, 130.000000, 0.177032 }},
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{ 64, 0.915000, 0.915000, { 4.254931, 130.000000, 0.132774 }},
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{ 80, 0.928000, 0.928000, { 4.254931, 130.000000, 0.106219 }},
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{ 96, 0.942000, 0.942000, { 4.254931, 130.000000, 0.088516 }},
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{ 128, 0.952000, 0.952000, { 4.254931, 130.000000, 0.066387 }},
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{ 160, 0.960000, 0.960000, { 4.254931, 130.000000, 0.053110 }},
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{ 192, 0.968000, 0.968000, { 4.254931, 130.000000, 0.044258 }},
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{ 256, 0.976000, 0.976000, { 4.605709, 140.000000, 0.035914 }},
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{ 512, 0.985000, 0.985000, { 4.781097, 145.000000, 0.018637 }},
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{ 768, 0.990000, 0.990000, { 4.956486, 150.000000, 0.012878 }},
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{ 1024, 0.993000, 0.993000, { 5.131875, 155.000000, 0.009999 }},
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};
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static inline void kaiser_window(struct resample *r, double *w, double t, uint32_t n_taps)
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