Wrong timestamp information in segment

[yujonglee]

Problem

@ealmloff I think the timestamps are currently relative to the voice audio detection chunk instead of the source audio

duration: 30.0, elapsed_time: 17.0649725s, remaining_time: 60s, sample_range: 0..480000, text:  maybe thi

duration: 30.0, elapsed_time: 34.5724935s, remaining_time: 45s, sample_range: 480000..960000, text:  like one,

duration: 30.0, elapsed_time: 51.340608208s, remaining_time: 30s, sample_range: 960000..1440000, text:  going on

duration: 30.0, elapsed_time: 60.117103167s, remaining_time: 15s, sample_range: 1440000..1920000, text:  years of

duration: 30.0, elapsed_time: 66.8509345s, remaining_time: 0ns, sample_range: 1920000..1936384, text:  Thank you

duration: 30.0, elapsed_time: 8.688271917s, remaining_time: 6s, sample_range: 0..480000, text:  like that

duration: 30.0, elapsed_time: 15.420485042s, remaining_time: 0ns, sample_range: 480000..502272, text:  Thank you

Steps To Reproduce

let mut stream = audio_source.transcribe(model).timestamped();

while let Some(segment) = stream.next().await {
    let duration = segment.duration();
    let elapsed_time = segment.elapsed_time();
    let remaining_time = segment.remaining_time();
    let sample_range = segment.sample_range();
    let text = segment.text()[..10].to_string();

    println!("duration: {:?}, elapsed_time: {:?}, remaining_time: {:?}, sample_range: {:?}, text: {}\n", duration, elapsed_time, remaining_time, sample_range, text);
}

Expected behavior

Timestmap information should be continuous.

Environment:

• Crate version: [Kalosm main]
• Rust version: [e.g. 1.43.0, nightly]
• OS info: [e.g. Windows, Linux, macOS]

Questionnaire

• I'm interested in fixing this myself but don't know where to start
• I would like to fix and I have a solution
• I don't have time to fix this right now, but maybe later