free(st->bw_lpc);
free(st->interp_qlpc);  free(st->bw_lpc1); free(st->bw_lpc2);
void encoder_destroy(EncState *st){   /* Free all allocated memory */   free(st->inBuf);   free(st->wBuf);   free(st->excBuf);   free(st->tBuf);   free(st->window);   free(st->buf2);   free(st->lpc);   free(st->interp_lpc);   free(st->bw_lpc);   free(st->autocorr);   free(st->lagWindow);   free(st->lsp);   free(st->old_lsp);   free(st->interp_lsp);   free(st->rc);}