forked from PAWPAW-Mirror/lib_xua
21 lines
690 B
C
21 lines
690 B
C
#ifndef __dbcalc_h__
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#define __dbcalc_h__
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/* Function: db_to_mult
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This function converts decibels into a volume multiplier. It uses a fixed-point polynomial approximation
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to 10^(db/10).
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Parameters:
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db - The db value to convert.
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db_frac_bits - The number of binary fractional bits in the supplied decibel value
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result_frac_bits - The number of required fractional bits in the result.
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Returns:
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The multiplier value as a fixed point value with the number of fractional bits as specified by
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the result_frac_bits parameter.
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*/
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unsigned db_to_mult(int db, int db_frac_bits, int result_frac_bits);
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#endif // __dbcalc_h__
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