1. 电话按键的声音是通过不同的音调传输的代码，早期黑客通过分析这些音调破解电话系统。 2. at&t公司在1963年采用了双音多频（dtmf）技术，提高了 ...

"DTMF" hits No. 1 in its 15th week on the chart, despite a 2% dip in audience impressions, earning 6.2 million in the U.S. in the tracking week ending May 8, according to Luminate.

Bad Bunny‘s “DtMF” hits a 20th week at No. 1 on Billboard’s Hot Latin Songs chart (dated June 7). The track’s extended dominance marks a milestone for Benito, becoming his third song to ...

Between “Me Porto Bonito” and “DtMF,” Bad Bunny’s best on the chart had been “Monaco,” which debuted and peaked at No. 2 on the Oct. 28, 2023-dated ranking.

该器件采用单个高速串行总线控制，与大多数串行接口兼容。调制解调器收发的信号在同一串行总线上传输，片上可编程tx和rx usart可用于异步数据，用8位字收发无格式的同步数据。它的dtmf解码器抗噪性能强，并提供标准dtmf编码器。

三汇公司电话语音卡报价单（2000年7月3日开始执行） : 型号: 功能简介: 销售指导价: 批发价（10块） 普 通 语 音 卡: shp-8a i型: 8通道，数字录放音 ...

In “Debí Tirar Más Fotos” (“I Should’ve Taken More Photos”), his sixth studio album and love letter to Puerto Rico, Bad Bunny proves that there is no other musician in the world like him.

当你在按电话号码时，交换机会持续监听这串音频信号，然后传送给 dtmf 解码器。 解码器再把这个音频还原成两个频率，再根据拨号盘的排布来匹配 ...

当你在按电话号码时，交换机会持续监听这串音频信号，然后传送给 dtmf 解码器。 解码器再把这个音频还原成两个频率，再根据拨号盘的排布来匹配 ...