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Is OpenAL setting AL_PITCH and AL_GAIN expensive?

Whenever I play a sound effect, I use:

alSourcei (sources [index], AL_BUFFER, 0);
alSourcei (sources [index], AL_BUFFER, bufferID);
alSourcef (sources [index], AL_PITCH, 1.0);
alSourcef (sources [index], AL_GAIN, 1.0);

will significant optimization remove the AL_PITCH and AL_GAIN settings each time the sound effect is played? Obviously, since they are 1.0 every time I could just install it once when I initialize the sound. What are the default values ​​AL_PITCH and AL_GAIN if they are not set?

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