fix start timestamp in sentence_info (#2024)

lingji-yidong

2024-08-19 f43da18b5e097515c12438c70fc7918c29e5d0c8

fix start timestamp in sentence_info (#2024)

Previously, the start timestamp was defined as the last character's timestamp[0] of the previous sentence. It has now been changed to the first character's timestamp[0] of the current sentence.

 funasr/utils/timestamp_tools.py

@@ -141,6 +141,8 @@
    )
    for punc_stamp_text in punc_stamp_text_list:
        punc_id, timestamp, text = punc_stamp_text
        if sentence_start is None and timestamp is not None:
            sentence_start = timestamp[0]
        # sentence_text += text if text is not None else ''
        if text is not None:
            if "a" <= text[0] <= "z" or "A" <= text[0] <= "Z":
@@ -183,7 +185,7 @@
            sentence_text = ""
            sentence_text_seg = ""
            ts_list = []
            sentence_start = timestamp[0] if timestamp is not None else sentence_start
            sentence_start = None
    return res


@@ -272,4 +274,4 @@
            sentence_text = ""
            sentence_text_seg = ""
            ts_list = []
    return res
    return res