Final answer:
The frequency received will be higher if the observer is moving towards the stationary source, and lower if moving away, due to the Doppler Effect.
Step-by-step explanation:
The frequency generated on the receiving end will be dependent on the relative motion between the source and the observer due to the Doppler Effect. If the observer is moving towards the stationary source, then the frequency of the received waves will be higher. Conversely, if the observer is moving away from the source, the perceived frequency will be lower. This effect occurs because the relative motion affects the wavelength of the sound waves reaching the observer. When moving towards the source, the wavelengths are compressed, leading to a higher frequency; when moving away, the wavelengths are stretched out, resulting in a lower frequency.
In general, relative motion towards each other between the source and observer increases the received frequency, while relative motion apart decreases frequency. The amount by which the frequency changes is directly proportional to the relative speed of the source and the observer.