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Multiple Choice

Which ITU standard provides wideband speech encoding for high-quality audio in videoconferencing?

G.722 provides wideband audio, capturing a broader frequency range (up to about 7 kHz) so speech sounds more natural and intelligible in videoconferencing. This wider bandwidth is achieved with a 16 kHz sampling rate and a multi-band coder, delivering bitrates around 48–64 kbps while preserving high quality. Compared to narrowband codecs that only cover up to about 4 kHz, G.722 delivers clearer consonants and more natural voice, which is important for meeting clarity in video calls. The GIF option is unrelated to audio, and other codecs designed for very low bitrate prioritize small bandwidth over wideband quality, so they don’t provide the same high-fidelity experience.

G.722 provides wideband audio, capturing a broader frequency range (up to about 7 kHz) so speech sounds more natural and intelligible in videoconferencing. This wider bandwidth is achieved with a 16 kHz sampling rate and a multi-band coder, delivering bitrates around 48–64 kbps while preserving high quality. Compared to narrowband codecs that only cover up to about 4 kHz, G.722 delivers clearer consonants and more natural voice, which is important for meeting clarity in video calls. The GIF option is unrelated to audio, and other codecs designed for very low bitrate prioritize small bandwidth over wideband quality, so they don’t provide the same high-fidelity experience.