Align speaker similarity results with the paper's WavLM model

README.md

@@ -121,7 +121,7 @@ comparators achieve higher PESQ-WB and STOI.
 
 dWER/dCER compare ASR transcripts of the reconstructed and original audio
 (Whisper-large-v3 for English and Japanese, Paraformer-zh for Mandarin). SIM is
-ECAPA-TDNN speaker similarity. Bitrates include duration information.
+cosine similarity of speaker embeddings from a fine-tuned WavLM-Large speaker verification model. Bitrates include duration information.
 
 The tables below show a subset of the compared codecs. **Bold** and
 <ins>underline</ins> mark the best and second-best scores within each bitrate
@@ -132,16 +132,16 @@ band.
 | Codec | Event rate (Hz) | Bitrate (kbit/s) | UTMOSv2 ↑ | DNSMOS ↑ | PESQ-WB ↑ | STOI ↑ | dWER (%) ↓ | SIM ↑ |
 |---|---:|---:|---:|---:|---:|---:|---:|---:|
 | *~1.2 kbit/s* | | | | | | | | |
-| FlexiCodec, τ=1, depth 8 | 12.5 | 1.24 | 3.194 | 3.284 | 2.813 | 0.940 | <ins>0.83</ins> | 0.805 |
-| MiMo-Audio-Tokenizer, depth 6 | 25.0 | 1.20 | 3.183 | 3.291 | 2.677 | 0.927 | 0.86 | <ins>0.879</ins> |
-| MOSS-Audio-Tokenizer, depth 10 | 12.5 | 1.25 | 3.230 | 3.217 | **3.052** | **0.949** | 0.89 | **0.885** |
-| DTM-Codec, 80-Hz target | 81.5 | 1.28 | <ins>3.421</ins> | **3.334** | <ins>2.971</ins> | <ins>0.947</ins> | 1.41 | 0.845 |
-| **RubatoCodec, depth 8** | 12.5 | 1.23 | **3.478** | <ins>3.327</ins> | 2.684 | 0.931 | **0.75** | 0.862 |
+| FlexiCodec, τ=1, depth 8 | 12.5 | 1.24 | 3.194 | 3.284 | 2.813 | 0.940 | <ins>0.83</ins> | 0.846 |
+| MiMo-Audio-Tokenizer, depth 6 | 25.0 | 1.20 | 3.183 | 3.291 | 2.677 | 0.927 | 0.86 | 0.848 |
+| MOSS-Audio-Tokenizer, depth 10 | 12.5 | 1.25 | 3.230 | 3.217 | **3.052** | **0.949** | 0.89 | **0.904** |
+| DTM-Codec, 80-Hz target | 81.5 | 1.28 | <ins>3.421</ins> | **3.334** | <ins>2.971</ins> | <ins>0.947</ins> | 1.41 | <ins>0.871</ins> |
+| **RubatoCodec, depth 8** | 12.5 | 1.23 | **3.478** | <ins>3.327</ins> | 2.684 | 0.931 | **0.75** | <ins>0.871</ins> |
 | *~2.4 kbit/s* | | | | | | | | |
-| Qwen3-TTS-Tokenizer-12Hz | 12.5 | 2.20 | 3.230 | 3.273 | <ins>3.177</ins> | <ins>0.958</ins> | <ins>0.53</ins> | 0.931 |
-| MiMo-Audio-Tokenizer, depth 13 | 25.0 | 2.42 | 3.210 | <ins>3.288</ins> | 3.094 | 0.947 | 0.67 | <ins>0.933</ins> |
-| MOSS-Audio-Tokenizer, depth 20 | 12.5 | 2.50 | <ins>3.239</ins> | 3.203 | **3.536** | **0.968** | 0.62 | **0.943** |
-| **RubatoCodec, depth 16** | 12.5 | 2.43 | **3.486** | **3.314** | 3.029 | 0.950 | **0.50** | 0.920 |
+| Qwen3-TTS-Tokenizer-12Hz | 12.5 | 2.20 | 3.230 | 3.273 | <ins>3.177</ins> | <ins>0.958</ins> | <ins>0.53</ins> | <ins>0.941</ins> |
+| MiMo-Audio-Tokenizer, depth 13 | 25.0 | 2.42 | 3.210 | <ins>3.288</ins> | 3.094 | 0.947 | 0.67 | 0.896 |
+| MOSS-Audio-Tokenizer, depth 20 | 12.5 | 2.50 | <ins>3.239</ins> | 3.203 | **3.536** | **0.968** | 0.62 | **0.954** |
+| **RubatoCodec, depth 16** | 12.5 | 2.43 | **3.486** | **3.314** | 3.029 | 0.950 | **0.50** | 0.928 |
 
 **JVNV (Japanese emotional speech with nonverbal vocalizations)**
 
@@ -151,16 +151,16 @@ every other compared codec exceeds 3%.
 | Codec | Event rate (Hz) | Bitrate (kbit/s) | UTMOSv2 ↑ | DNSMOS ↑ | PESQ-WB ↑ | STOI ↑ | dCER (%) ↓ | SIM ↑ |
 |---|---:|---:|---:|---:|---:|---:|---:|---:|
 | *~1.2 kbit/s* | | | | | | | | |
-| FlexiCodec, τ=1, depth 8 | 12.5 | 1.24 | 1.811 | 3.128 | 2.062 | 0.862 | 5.52 | 0.771 |
-| MiMo-Audio-Tokenizer, depth 6 | 25.0 | 1.20 | **2.681** | **3.173** | 2.295 | 0.872 | 7.88 | 0.860 |
-| MOSS-Audio-Tokenizer, depth 10 | 12.5 | 1.25 | 2.396 | 3.089 | **3.032** | **0.917** | <ins>5.44</ins> | **0.909** |
+| FlexiCodec, τ=1, depth 8 | 12.5 | 1.24 | 1.811 | 3.128 | 2.062 | 0.862 | 5.52 | 0.786 |
+| MiMo-Audio-Tokenizer, depth 6 | 25.0 | 1.20 | **2.681** | **3.173** | 2.295 | 0.872 | 7.88 | 0.821 |
+| MOSS-Audio-Tokenizer, depth 10 | 12.5 | 1.25 | 2.396 | 3.089 | **3.032** | **0.917** | <ins>5.44</ins> | **0.924** |
 | DTM-Codec, 80-Hz target | 46.1 | 0.77 | 2.523 | 3.154 | 2.081 | 0.862 | 14.82 | 0.783 |
-| **RubatoCodec, depth 8** | 12.5 | 1.23 | <ins>2.628</ins> | <ins>3.164</ins> | <ins>2.650</ins> | <ins>0.907</ins> | **1.92** | <ins>0.903</ins> |
+| **RubatoCodec, depth 8** | 12.5 | 1.23 | <ins>2.628</ins> | <ins>3.164</ins> | <ins>2.650</ins> | <ins>0.907</ins> | **1.92** | <ins>0.907</ins> |
 | *~2.4 kbit/s* | | | | | | | | |
-| Qwen3-TTS-Tokenizer-12Hz | 12.5 | 2.20 | 2.638 | 3.097 | <ins>3.041</ins> | <ins>0.931</ins> | <ins>3.01</ins> | <ins>0.945</ins> |
-| MiMo-Audio-Tokenizer, depth 13 | 25.0 | 2.42 | **2.708** | **3.176** | 2.949 | 0.911 | 4.21 | 0.927 |
-| MOSS-Audio-Tokenizer, depth 20 | 12.5 | 2.50 | 2.383 | 3.057 | **3.496** | **0.941** | 3.96 | **0.953** |
-| **RubatoCodec, depth 16** | 12.5 | 2.43 | <ins>2.651</ins> | <ins>3.138</ins> | 3.032 | 0.929 | **1.54** | 0.941 |
+| Qwen3-TTS-Tokenizer-12Hz | 12.5 | 2.20 | 2.638 | 3.097 | <ins>3.041</ins> | <ins>0.931</ins> | <ins>3.01</ins> | <ins>0.951</ins> |
+| MiMo-Audio-Tokenizer, depth 13 | 25.0 | 2.42 | **2.708** | **3.176** | 2.949 | 0.911 | 4.21 | 0.885 |
+| MOSS-Audio-Tokenizer, depth 20 | 12.5 | 2.50 | 2.383 | 3.057 | **3.496** | **0.941** | 3.96 | **0.963** |
+| **RubatoCodec, depth 16** | 12.5 | 2.43 | <ins>2.651</ins> | <ins>3.138</ins> | 3.032 | 0.929 | **1.54** | 0.946 |
 
 **Quality versus bitrate** (RubatoCodec is marked with a red star)