Record sentences (Australian/British English): $15 bonus for completion within 1 day, $10 bonus for 2 days.

Speech Rate Requirements: 1 pass at slightly faster speed, 1 pass at normal speed. The speech rate should not include noticeable pauses; pauses between words in a sentence should not exceed 0.5 seconds. Do not speak so fast that the words become unclear. Data Scale: 50 participants each from the UK and Australia. Recording Texts: For all entries except the two specified below, record twice each—once at normal speed and once at slightly faster speed. The following two entries must be recorded 10 times each—7 at normal speed and 3 at slightly faster speed: This totals 502*2+2*10=1024 sentences per person, primarily from large cities, distributed evenly across northern, central, and southern regions. Recording Requirements: Slightly faster speech is defined as faster than normal but still in a clear and natural speaking manner. It should be comprehensible, with no slurring or swallowing of words. It is not a challenge for extremely fast speaking. Pronunciation should be clear and articulate, with no mispronunciations or dialectal influences. A slight accent is acceptable as long as it is standard English. Recording Environment: Quiet, close-talking setup (background noise should not exceed 50dB). Signal-to-noise ratio (SNR) > 20dB. Recording should be done in a normal home environment or a quiet conference room with an RT60 (reverberation time) of around 0.4. Recording Format: WAV format. Each person's recording for each word must be saved as an individual file. Include 1 second of non-human background noise before and after each spoken command, naturally captured by the microphone. Artificial silence or spliced audio segments are not allowed. Sampling Requirements: Sampling rate: At least 44.1KHz, 16-bit, mono-channel WAV format. Consistent sampling rate output. Recorded in a quiet indoor environment. Average RMS amplitude should not be lower than -35dB.