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feature: Add 2.5 ms and 5 ms LC3 plus frame durations

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fix: Check TNS bitstream data

fix: LTPF Activation with 2.5 ms frame sizes
This commit is contained in:
anonymix007
2023-12-13 10:56:20 -08:00
committed by Antoine Soulier
parent a75f187e00
commit 149cb6537e
43 changed files with 3095 additions and 1628 deletions
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46
test/mdct.py
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@@ -24,8 +24,10 @@ import tables as T, appendix_c as C
class Mdct:
W = [ [ T.W_7M5_60, T.W_7M5_120, T.W_7M5_180, T.W_7M5_240, T.W_7M5_360 ],
[ T.W_10M_80, T.W_10M_160, T.W_10M_240, T.W_10M_320, T.W_10M_480 ] ]
W = [ [ T.W_2M5_8K, T.W_2M5_16K, T.W_2M5_24K, T.W_2M5_32K, T.W_2M5_48K ],
[ T.W_5M_8K , T.W_5M_16K , T.W_5M_24K , T.W_5M_32K , T.W_5M_48K ],
[ T.W_7M5_8K, T.W_7M5_16K, T.W_7M5_24K, T.W_7M5_32K, T.W_7M5_48K ],
[ T.W_10M_8K, T.W_10M_16K, T.W_10M_24K, T.W_10M_32K, T.W_10M_48K ] ]
def __init__(self, dt, sr):
@@ -117,16 +119,19 @@ def check_forward_unit(rng, dt, sr):
def check_forward_appendix_c(dt):
i0 = dt - T.DT_7M5
sr = T.SRATE_16K
ns = T.NS[dt][sr]
nd = T.ND[dt][sr]
ok = True
(y, d) = lc3.mdct_forward(dt, sr, C.X_PCM[dt][0], np.zeros(nd))
ok = ok and np.amax(np.abs(y - C.X[dt][0])) < 1e-1
ns = T.NS[dt][sr]
nd = T.ND[dt][sr]
(y, d) = lc3.mdct_forward(dt, sr, C.X_PCM[dt][1], d)
ok = ok and np.amax(np.abs(y - C.X[dt][1])) < 1e-1
(y, d) = lc3.mdct_forward(dt, sr, C.X_PCM[i0][0], np.zeros(nd))
ok = ok and np.amax(np.abs(y - C.X[i0][0])) < 1e-1
(y, d) = lc3.mdct_forward(dt, sr, C.X_PCM[i0][1], d)
ok = ok and np.amax(np.abs(y - C.X[i0][1])) < 1e-1
return ok
@@ -134,7 +139,7 @@ def check_forward_appendix_c(dt):
def check_inverse_unit(rng, dt, sr):
ns = T.NS[dt][sr]
nd = [ (23 * ns) // 30, (5 * ns) // 8 ][dt]
nd = T.ND[dt][sr]
ok = True
x = (2 * rng.random(ns)) - 1
@@ -157,22 +162,25 @@ def check_inverse_unit(rng, dt, sr):
def check_inverse_appendix_c(dt):
i0 = dt - T.DT_7M5
sr = T.SRATE_16K
ns = T.NS[dt][sr]
nd = [ (23 * ns) // 30, (5 * ns) // 8 ][dt]
ok = True
(y, d0) = lc3.mdct_inverse(dt, sr, C.X_HAT_SNS[dt][0], np.zeros(nd))
yr = C.T_HAT_MDCT[dt][0][ns-nd:2*ns-nd]
dr = C.T_HAT_MDCT[dt][0][2*ns-nd:]
ns = T.NS[dt][sr]
nd = T.ND[dt][sr]
(y, d0) = lc3.mdct_inverse(dt, sr, C.X_HAT_SNS[i0][0], np.zeros(nd))
yr = C.T_HAT_MDCT[i0][0][ns-nd:2*ns-nd]
dr = C.T_HAT_MDCT[i0][0][2*ns-nd:]
ok = ok and np.amax(np.abs(yr - y )) < 1e-1
ok = ok and np.amax(np.abs(dr - d0)) < 1e-1
(y, d1) = lc3.mdct_inverse(dt, sr, C.X_HAT_SNS[dt][1], d0)
yr[ :nd] = C.T_HAT_MDCT[dt][1][ns-nd:ns] + d0
yr[nd:ns] = C.T_HAT_MDCT[dt][1][ns:2*ns-nd]
dr = C.T_HAT_MDCT[dt][1][2*ns-nd:]
(y, d1) = lc3.mdct_inverse(dt, sr, C.X_HAT_SNS[i0][1], d0)
yr[ :nd] = C.T_HAT_MDCT[i0][1][ns-nd:ns] + d0
yr[nd:ns] = C.T_HAT_MDCT[i0][1][ns:2*ns-nd]
dr = C.T_HAT_MDCT[i0][1][2*ns-nd:]
ok = ok and np.amax(np.abs(yr - y )) < 1e-1
ok = ok and np.amax(np.abs(dr - d1)) < 1e-1
@@ -191,7 +199,7 @@ def check():
ok = ok and check_forward_unit(rng, dt, sr)
ok = ok and check_inverse_unit(rng, dt, sr)
for dt in range(T.NUM_DT):
for dt in range(T.DT_7M5, T.NUM_DT):
ok = ok and check_forward_appendix_c(dt)
ok = ok and check_inverse_appendix_c(dt)