+inline float
+meter_deflect_ppm (float db)
+{
+ if (db < -30) {
+ // 2.258 == ((-30 + 32.0)/ 28.0) / 10^(-30 / 20);
+ return (dB_to_coefficient(db) * 2.258769757f);
+ } else {
+ const float rv = (db + 32.0f) / 28.0f;
+ if (rv < 1.0) {
+ return rv;
+ } else {
+ return 1.0;
+ }
+ }
+}
+
+inline float
+meter_deflect_din (float db)
+{
+ float rv = dB_to_coefficient(db);
+ rv = sqrtf (sqrtf (2.3676f * rv)) - 0.1803f;
+ if (rv >= 1.0) {
+ return 1.0;
+ } else {
+ return (rv > 0 ? rv : 0.0);
+ }
+}
+
+inline float
+meter_deflect_nordic (float db)
+{
+ if (db < -60) {
+ return 0.0;
+ } else {
+ const float rv = (db + 60.0f) / 54.0f;
+ if (rv < 1.0) {
+ return rv;
+ } else {
+ return 1.0;
+ }
+ }
+}
+
+inline float
+meter_deflect_vu (float db)
+{
+ const float rv = 6.77165f * dB_to_coefficient(db);
+ if (rv > 1.0) return 1.0;
+ return rv;
+}
+
+inline float
+meter_deflect_k (float db, float krange)
+{
+ db+=krange;
+ if (db < -40.0f) {
+ return (dB_to_coefficient(db) * 500.0f / (krange + 45.0f));
+ } else {
+ const float rv = (db + 45.0f) / (krange + 45.0f);
+ if (rv < 1.0) {
+ return rv;
+ } else {
+ return 1.0;
+ }
+ }
+}
+