Why This Layout Works How to Listen Track Categories Listening Families By Track Notes Qualitative Results
This page is organized around the challenge structure first: Track 1 and Track 2 are separated into distinct sections and asset paths, then subdivided into listening families, bitrate groups, and numbered examples that make it easy to reference the same case across reviews and discussions.
Challenge tracks 2
Listening families 6
Representative cases 35
Playable clips 290
Jump To A Listening Family This structure is close to the usual qualitative-results pattern from papers and challenge writeups:
examples are grouped by evaluation condition rather than by system each case keeps the speech content fixed while the systems vary consistent numbering makes it easy to point multiple listeners to the same example role-based color coding keeps the comparison set easy to scan Jump to top
Listen to the clean or noisy reference first when it is available so the rest of the row has a stable target.
Stay inside a single case before moving on. That keeps the content fixed while artifacts, intelligibility, and naturalness change.
After you learn a system's character, move across the same family to see whether the pattern repeats.
Use headphones when possible. Audio players use native browser controls and preload="none" to avoid downloading every file at page load. Jump to top
Track 1 Transparency Codecs Coding-only evaluations focused on clean-speech quality, mild real-world distortions, and preservation of overlapping speakers.
Track 2 Speech Enhancement Codecs Enhancement-capable evaluations focused on clean-speech transparency and intelligibility under enhancement-oriented conditions.
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6 kbps Aligned comparison set for this bitrate condition Reference Baseline aitd-go Boya Audio NanoCodec NJU-AA Lab Pdura7 TeamWZQAQ Anchor Reference Baseline aitd-go Boya Audio NanoCodec NJU-AA Lab Pdura7 TeamWZQAQ Anchor 1 kbps Aligned comparison set for this bitrate condition Reference Baseline aitd-go Boya Audio NanoCodec NJU-AA Lab Pdura7 TeamWZQAQ Anchor Reference Baseline aitd-go Boya Audio NanoCodec NJU-AA Lab Pdura7 TeamWZQAQ Anchor Reference Baseline aitd-go Boya Audio NanoCodec NJU-AA Lab Pdura7 TeamWZQAQ Anchor 1 kbps Aligned comparison set for this bitrate condition Noisy Reference Baseline aitd-go Boya Audio NanoCodec NJU-AA Lab Pdura7 TeamWZQAQ Noisy Reference Baseline aitd-go Boya Audio NanoCodec NJU-AA Lab Pdura7 TeamWZQAQ Noisy Reference Baseline aitd-go Boya Audio NanoCodec NJU-AA Lab Pdura7 TeamWZQAQ Noisy Reference Baseline aitd-go Boya Audio NanoCodec NJU-AA Lab Pdura7 TeamWZQAQ Noisy Reference Baseline aitd-go Boya Audio NanoCodec NJU-AA Lab Pdura7 TeamWZQAQ Noisy Reference Baseline aitd-go Boya Audio NanoCodec NJU-AA Lab Pdura7 TeamWZQAQ Noisy Reference Baseline aitd-go Boya Audio NanoCodec NJU-AA Lab Pdura7 TeamWZQAQ 6 kbps Aligned comparison set for this bitrate condition Noisy Reference Baseline aitd-go Boya Audio NanoCodec NJU-AA Lab Pdura7 TeamWZQAQ Noisy Reference Baseline aitd-go Boya Audio NanoCodec NJU-AA Lab Pdura7 TeamWZQAQ Noisy Reference Baseline aitd-go Boya Audio NanoCodec NJU-AA Lab Pdura7 TeamWZQAQ Noisy Reference Baseline aitd-go Boya Audio NanoCodec NJU-AA Lab Pdura7 TeamWZQAQ Noisy Reference Baseline aitd-go Boya Audio NanoCodec NJU-AA Lab Pdura7 TeamWZQAQ Noisy Reference Baseline aitd-go Boya Audio NanoCodec NJU-AA Lab Pdura7 TeamWZQAQ 1 kbps word pairs Aligned comparison set for this bitrate condition Target: net Alternative: met
Clean Reference Baseline aitd-go Boya Audio NanoCodec NJU-AA Lab Pdura7 TeamWZQAQ Target: neck Alternative: deck
Clean Reference Baseline aitd-go Boya Audio NanoCodec NJU-AA Lab Pdura7 TeamWZQAQ Target: got Alternative: dot
Clean Reference Baseline aitd-go Boya Audio NanoCodec NJU-AA Lab Pdura7 TeamWZQAQ Target: shoes Alternative: choose
Clean Reference Baseline aitd-go Boya Audio NanoCodec NJU-AA Lab Pdura7 TeamWZQAQ Target: dote Alternative: note
Clean Reference Baseline aitd-go Boya Audio NanoCodec NJU-AA Lab Pdura7 TeamWZQAQ 6 kbps Aligned comparison set for this bitrate condition Reference aitd-go Boya Audio NanoCodec NJU-AA Lab Pdura7 TeamWZQAQ Additional Comparison 1 kbps Aligned comparison set for this bitrate condition Reference Baseline aitd-go Boya Audio NanoCodec NJU-AA Lab Pdura7 TeamWZQAQ Jump to top 6 kbps Aligned comparison set for this bitrate condition Reference Baseline aitd-go Boya Audio NanoCodec NJU-AA Lab Pdura7 TeamWZQAQ Anchor Reference Baseline aitd-go Boya Audio NanoCodec NJU-AA Lab Pdura7 TeamWZQAQ Anchor 1 kbps Aligned comparison set for this bitrate condition Reference Baseline aitd-go Boya Audio NanoCodec NJU-AA Lab Pdura7 TeamWZQAQ Anchor Reference Baseline aitd-go Boya Audio NanoCodec NJU-AA Lab Pdura7 TeamWZQAQ Anchor Reference Baseline aitd-go Boya Audio NanoCodec NJU-AA Lab Pdura7 TeamWZQAQ Anchor 1 kbps word pairs Aligned comparison set for this bitrate condition Target: net Alternative: met
Clean Reference Baseline aitd-go Boya Audio NanoCodec NJU-AA Lab Pdura7 TeamWZQAQ Target: neck Alternative: deck
Clean Reference Baseline aitd-go Boya Audio NanoCodec NJU-AA Lab Pdura7 TeamWZQAQ Target: got Alternative: dot
Clean Reference Baseline aitd-go Boya Audio NanoCodec NJU-AA Lab Pdura7 TeamWZQAQ Target: shoes Alternative: choose
Clean Reference Baseline aitd-go Boya Audio NanoCodec NJU-AA Lab Pdura7 TeamWZQAQ Target: dote Alternative: note
Clean Reference Baseline aitd-go Boya Audio NanoCodec NJU-AA Lab Pdura7 TeamWZQAQ Jump to top These examples are intended to complement the written challenge materials by making qualitative behavior easy to hear quickly, not by replacing the formal metrics or the written system reports.
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