A wideband codec at 16/24 kbit/s with 10 ms frames
Why this work is in the frame
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Bibliographic record
Abstract
This paper describes a wideband speech/audio codec at 16/24 kbit/s with 10 ms frames. The algorithm uses an ACELP model at 16 kbit/s and a switched ACELP/TCX model at 24 kbit/s. Adaptive preemphasis is used to improve the performance at high frequencies and a hybrid forward/backward LP filter is used to improve the performance of stationary signals. Subjective tests showed that for speech signals, the codec performance at 16 and 24 kbit is equivalent to G.722 at 48 and 56 kbit/s, respectively. For music signals, the performance of the codec at 24 kbit/s was equivalent to that of G.722 at 48 kbit/s.
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Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.001 |
| Open science | 0.001 | 0.001 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.003 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it