LISTENING STUDY 02 ENGLISH · IPTV

Emotion & energy,
by ear.

A closer listen to the feeling in a voice. Explore real production segments through predicted emotions, energy bands, and a spectrogram that follows every word.

Explore the clips ↓
55distinct segments
8predicted emotions
3relative energy bands
3.5/5minimum MOS
01 / THE REFERENCE SAMPLE

What the pipeline hears.

Before balancing the listening set, we measured the natural mix in a separate sample. These charts describe that reference, not the curated clips below.

Predicted emotion

SHARE OF SEGMENTS

Neutral dominates; rare labels were sought separately to give every emotion five listening examples.

Relative energy

MODEL SCORE

Empirical thirds, with ties kept together. Energy is a model score, not loudness or a probability.

02 / THE LISTENING ROOM

Find the feeling.

Five examples in each group. Click a transcript to jump to that clip. Cleaned audio plays wherever the production cleaner was applied.

03 / NOTES ON THE STUDY

A little context
for your ears.

Download the study data ↗
01

Real pipeline output

All 55 clips are from distinct completed IPTV jobs. Enhanced segments use the verified cleaned episode audio; unenhanced segments use the original. Each source and segment mapping was rechecked against its production manifest.

02

English, with a quality floor

English-only channel metadata and English transcript language tags, with final predicted MOS ≥3.5/5. Reference candidates are 4–16 seconds with at least five words. MOS is an automated quality estimate, not a human listening score.

03

Predictions, not ground truth

Emotion and energy come from Hotdog. Emotion confidence describes the model’s prediction. The emotion examples favor confident predictions and varied channels; they do not represent the natural emotion mix. Transcripts are automatic and may contain errors.

04

Comparable views

All videos use a shared −90 to 0 dB spectrogram scale, display 0–12 kHz, and retain full-band 48 kHz audio without loudness normalization. A moving playhead tracks both waveform and spectrum. Energy bands use fixed reference-sample cutoffs, with examples spanning scores within each band.