In the late sixties I was programming at a bank and even then there was a voice response account-balance phone number. The machine was quite large, about the s

In the late sixties I was programming at a bank and even then there was a voice response account-balance phone number. The machine was quite large, about the size of two refrigerators. It had twelve different loops of tape that spun around. Each tape had one digit or word. It sounded exactly as you describe.