4 ms·
I am not so sure: according to Wikipedia, Skype uses SILK, which has bitrate of 6-60 kbit/s [0]. In contrast, G.711 (often used for classic landline telephones)
by lqet 6y ago
I am not so sure: according to Wikipedia, Skype uses SILK, which has bitrate of 6-60 kbit/s [0]. In contrast, G.711 (often used for classic landline telephones) has a bitrate of 64 kbit/s [1].
I can only speak from personal experience: my cheap standard landline has much better audio quality and lower delay times than any Skype call I have made.
[0] https://en.wikipedia.org/wiki/SILK https://en.wikipedia.org/wiki/SILK
[1] https://en.wikipedia.org/wiki/G.711 https://en.wikipedia.org/wiki/G.711
- Tsiklon 6y agoIs this bitrate comparison an "apples to apples" comparison? I know when talking about audio compression in the frame of music reproduction AAC 256Kb/s is similarly performant to MP3 320Kb/s - and I think there are better performing audio codecs still.
- EVdotIO 6y agoBitrate only tells a little bit of the story. There are high pass and low pass filters, audio compression, data compression, latency, error correction and a number of other things at play with these codecs to hit a desired bitrate with the goal of maximizing for highest legibility over unreliable connections. This leads to a number of compromises; in the case of Skype this means you can have huge variance in quality, and landlines are consistent but incredibly limited in reproducible bandwidth and dynamic range.