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m-files fixed wavwrite

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jens
2025-08-22 13:39:23 +02:00
parent 21411d2c56
commit 2ab8c68c9b
4 changed files with 21 additions and 18 deletions
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matlab/osc/blip/eval_blit.m
+11 -8
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@@ -2,12 +2,15 @@ function eval_blit()
sinc_use_lut = 0 sinc_use_lut = 0
L = 40000; L = 96000;
fs = 48000; fs = 48000;
fstart = 8*440; fstart = 440;
fend = 8*440; fend = 440;
df = (fend-fstart)/L df = (fend-fstart)/L
# for saw
rho = 0.95;
nhw = 4096; nhw = 4096;
Hw = kaiser(nhw, 8)'; Hw = kaiser(nhw, 8)';
@@ -65,7 +68,7 @@ for n = 1:L,
end end
end end
saw = saw + fraq - blit; saw = rho*saw + (fraq - blit);
sqr = sqr + z*blit; sqr = sqr + z*blit;
tri = tri + 2*(sqr-0.5)*fraq; tri = tri + 2*(sqr-0.5)*fraq;
vtri(n) = tri; vtri(n) = tri;
@@ -82,8 +85,8 @@ close all
figure; figure;
plot(1:L, vsaw, 1:L, vblit); grid; plot(1:L, vsaw, 1:L, vblit); grid;
wavw16(0.5*vtri, fs, 'tri.wav'); wavwrite(0.5*vtri, fs, 'tri.wav');
wavw16(0.5*vsqr, fs, 'sqr.wav'); wavwrite(0.5*vsqr, fs, 'sqr.wav');
wavw16(0.5*vsaw, fs, 'saw.wav'); wavwrite(0.5*vsaw, fs, 'saw.wav');
wavw16(0.5*vblit, fs, 'blit.wav'); wavwrite(0.5*vblit, fs, 'blit.wav');
matlab/osc/blip/eval_blit2.m
+1 -1
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@@ -58,7 +58,7 @@ for i = 1:L,
f = f + df; f = f + df;
end; end;
wavw16(0.7*blit, fs, 'blit.wav'); wavwrite(0.7*blit, fs, 'blit.wav');
for ii = 1:Nos for ii = 1:Nos
step(ii,:) = k(ii).*filter(Hs(ii,:), 1, [ones(1,Nb)]); step(ii,:) = k(ii).*filter(Hs(ii,:), 1, [ones(1,Nb)]);
matlab/osc/blip/eval_blit3.m
+4 -4
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@@ -9,7 +9,7 @@ df = (fend-fstart)/L;
fcut = 16000; fcut = 16000;
x = (0:Nb*Nphases-1) - (Nb*Nphases-1)/2; x = (0:Nb*Nphases-1) - (Nb*Nphases-1)/2;
H = sinc(2*fcut/fs.*x/Nphases);%.*Kaiser(Nphases*Nb, 8)'; H = sinc(2*fcut/fs.*x/Nphases);%.*kaiser(Nphases*Nb, 8)';
Hw = kaiser(Nb, 18)'; Hw = kaiser(Nb, 18)';
for ii=0:Nphases-1, for ii=0:Nphases-1,
@@ -62,7 +62,7 @@ plot(saw); grid;
figure; figure;
plot(saw_nodc); grid; plot(saw_nodc); grid;
wavw16(0.8*blit, fs, 'blit.wav'); wavwrite(0.8*blit, fs, 'blit.wav');
wavw16(0.7*saw_nodc, fs, 'saw.wav'); wavwrite(0.7*saw_nodc, fs, 'saw.wav');
wavw16(0.5*sqr_nodc, fs, 'sqr.wav'); wavwrite(0.5*sqr_nodc, fs, 'sqr.wav');
matlab/osc/blip/eval_blit4.m
+5 -5
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@@ -80,9 +80,9 @@ plot(vc4); grid;
figure; figure;
plot(vc3); grid; plot(vc3); grid;
wavw16(0.5*vc4, fs, 'c4.wav'); wavwrite(0.5*vc4, fs, 'c4.wav');
wavw16(0.5*vc3, fs, 'c3.wav'); wavwrite(0.5*vc3, fs, 'c3.wav');
wavw16(0.5*vsqr, fs, 'sqr.wav'); wavwrite(0.5*vsqr, fs, 'sqr.wav');
wavw16(0.5*vsaw, fs, 'saw.wav'); wavwrite(0.5*vsaw, fs, 'saw.wav');
wavw16(0.5*vblit, fs, 'blit.wav'); wavwrite(0.5*vblit, fs, 'blit.wav');