00100 PROCEDURE LOGMAG(REAL ARRAY A,B:INTEGER M); 00200 BEGIN 00300 FOR I←0 STEP 1 UNTIL 2↑M DO 00400 BEGIN 00500 A[I]←ALOG10(A[I]); 00600 B[I]←ALOG10(A[I]); 00700 END; 00800 END "LOGMAG"; 00850 00900 PROCEDURE CEPSTRUM(REAL AARRAY A,B;INTEGER M); 01000 BEGIN 01100 RFOUR(A,B,M,0); 01200 LOGMAG(A,B,M); 01300 RFOUR(A,B,M,1); 01400 END "CEPSTRUM"; 01500