The TAA300 integrated circuit is not common today. In fact, the circuit shown is from a Dutch Philips documentation from 1969. The output is 8 ohm speaker and 9 V power supply.
This UAA170 application circuit was taken from Siemens' own integrated circuits manual from 1976....
The astable multivibrator shown by the figure can produce signals in the 10 to 10 000 Hz band...
Found in an American publication from the 1980s, this circuit can be found in commercial sound...