The preferred headphone EQ matches the loudspeaker’s predicted in-room response.

Evidence

Figure 15.7(d) shows what the flattened in-room loudspeaker measurement looks like from the perspective of the microphone at the primary seat with the headphone test fixture removed. The after-EQ curve is the preferred headphone EQ applied to the loudspeaker. It closely resembles the PIR of the Revel F208 loudspeaker shown here, which is approximately 10 dB downward sloped curve from 20 Hz to 20 kHz. The PIR is approximately how the loudspeaker measures in the room (ignoring room resonances) before flattening EQ is applied. — Toole, Floyd E, Sound reproduction- the acoustics and…, 1787

Categorization

Category: Causal Relationships

Related

• Headphone and loudspeaker bass targets converge on the same in-room response (similarity 0.89)
• Listener-preferred headphone response mirrors a neutral loudspeaker’s in-room response (similarity 0.88)
• Loudspeaker off-axis response dominates in-room energy at the listening position. (similarity 0.85)
• The direct, on-axis sound dominates perceived loudspeaker quality in rooms. (similarity 0.85)
• In-room measurement curves are dominated by reflections, not direct sound (similarity 0.85)
• Equalizing for a flat in-room response requires adding a high-frequency boost. (similarity 0.85)
• Loudspeaker directivity determines which curve predicts the room (similarity 0.84)
• Anechoic loudspeaker data reliably predict in-room high-frequency response above 500 Hz. (similarity 0.84)
• The listening room, not the loudspeaker, determines perceived bass quality. (similarity 0.84)
• Sound power predicts room response for omnidirectional speakers while directivity shapes room curves (similarity 0.84)
• Room reflectivity at low frequencies determines bass elevation in measured steady-state curves (similarity 0.84)
• A headphone target curve descends gradually with frequency and boosts bass. (similarity 0.83)
• On-axis frequency response cannot predict in-room measurements but does predict perceived sound. (similarity 0.83)
• Room acoustics dominate perceived bass response below roughly 250 Hz (similarity 0.83)
• On-axis response alone cannot predict how a loudspeaker sounds in a room (similarity 0.83)

Broader Connections

• Headphone and loudspeaker bass targets converge on the same in-room response #corroborates (0.95) — Toole, Floyd E, Sound reproduction- the acoustics and…, 1829
• Loudspeaker directivity determines which curve predicts the room #qualifies (0.75) — Toole, Floyd E, Sound reproduction- the acoustics and…, 1328