This means that as wavelengths get shorter, more waves move past a particular spot in the same amount of time.
Answer the question based on the following text.

Question:


As the train approached the intersection and blew its horn, compressing the wavelengths of the sound, did the frequency of the horn increase or decrease?? 


Text:

{{context}}
<|tasktype|>
multiple-choice question answering
<|context|>
This means that as wavelengths get shorter, more waves move past a particular spot in the same amount of time.
<|task|>

Answer the question based on the following text.

Question:


As the train approached the intersection and blew its horn, compressing the wavelengths of the sound, did the frequency of the horn increase or decrease?? 


Text:

{{context}}
<|pipe|>
increase