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forum.calloffice.ru • Просмотр темы - Настройки частоты записи сообщений в WAV

Настройки частоты записи сообщений в WAV

Обсуждение общих вопросов продукта Call Office

Модератор: McBurns

Настройки частоты записи сообщений в WAV

Сообщение myudm » 15 апр 2013, 11:51

При создании конфигурации записи сообщений автоответчика в WAV не обнаружил настроек качества записи. Судя по логу программы используется частота дискретизации при записи всего 8000 Гц. Нельзя ли увеличить данную частоту - внести в программу возможность выбора частот 22050, 44100, 48000 из стандартного ряда MPEG sample rate?
:?:
myudm
 
Сообщений: 5
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Re: Настройки частоты записи сообщений в WAV

Сообщение Jugin » 15 апр 2013, 12:13

Здравствуйте,
Дело в том, что полоса пропускания стандартной телефонной линии - 4000 Гц, поэтому для оцифровки без потерь () достаточно 8000 Гц. Голосовые модемы оцифровывают с частотой 7200 U, 8000 Гц, 11025 Гц, GSM модемы - 8000 Гц, SIP как правило использует так же 8000 Гц. Большую частоту применительно к телефонной линии просто не имеет смысла использовать, по крайней мере на современном уровне развития телефонных сетей.
Jugin
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