“These big companies [and governments] are getting away with a lot,” Browder tells me. He hit a breaking point when frustrated with the process of appealing parking tickets. He built DoNotPay to cut through hassles designed to separate us from our money. In April it raised a $3.5 million seed round led by Felicis to develop an Android version after picking up early funding from Andreessen Horowitz. Surprisingly, the startup has never been sued.
For those still using analogue or digital phone systems, voice on ISDN circuits has a bandwidth of around 4000Hz. The audio from an analogue phone is sampled at 8000Hz, and because of the nyquist theorem, must be low-pass filtered to 4000Hz. So any frequencies in the audio beyond 4000Hz are lost. Interestingly, the human ear and mind are good at recognising human speech, so this is considered "toll-quality" voice, i.e. good enough to pay for. This is the reason why certain vocalised letters are difficult or impossible to tell apart on the phone. For example, the differences between B, P, T, C, etc. are almost entirely above 4000Hz.

"That self-awareness came from wanting to experiment with this genre of hold music, that I'm not even really sure is a thing," Cornell said.
Yes. Holdcom can readily incorporate client supplied audio components (with permission and licensing) into its Message on Hold programs. Upon request, we can include messages from CEOs and Presidents, company jingles, radio excerpts, television ads, or any other existing content.