New Sony WH-1000XM4 headphone features get detailed in a leak

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In the vast sea of wireless Bluetooth headphones with active noise cancellation, there’s one product that has stood among the pack: the Sony WH-1000XM3. People really love these headphones (multiple XDA staffers have them), which means people are really interested in seeing how Sony will follow up on them. Information has started to pop up about the Sony WH-1000XM4 headphones, and today, an APK teardown is revealing even more features.

First, back in March, XDA’s Mishaal Rahman shared some live photos of the Sony WH-1000XM4. The design of the WH-1000XM4 headphones isn’t that exciting as it’s essentially identical to the Sony WH-1000XM3. The headphones were certified by Brazil’s Anatel, the country’s equivalent to the U.S. FCC. Mishaal also shared two pages of the device’s manual.

Fast forward to today and we’ve got even more goodies about the Sony WH-1000XM4 to share. Twitter user @justplayinghard posted some of his findings from a teardown of the Sony Headphones Connect APK. We also did our own teardown to corroborate these details. First up, there will be three colors: Black, Silver, and White. The Black and Silver colors can be seen below, but we did not include the render of the White model since the image in the APK was a placeholder one.

DSEE Extreme

Next up is DSEE Extreme. Based on the strings, it sounds like DSEE Extreme is DSEE HX with some unspecified AI enhancements. DSEE HX is an existing feature of Sony headphones (including the WH-1000XM3) that upscales sound sources to higher quality. Sony filed a trademark for DSEE Extreme last month and launched “DSEE Ultimate” with the Xperia 1 II. It’s likely that these two terms refer to the same technology, but we’ll have to wait and see.

Auto
Off
DSEE Extreme
DSEE Extreme On

Multi Point Connections

The next feature is something that people will really love. The Sony WH-1000XM4 may be able to connect to multiple devices at once to quickly switch between them, though that appears to be limited to two devices maximum. The Sony WH-1000XM3 can store multiple Bluetooth pairings, but you have to disconnect from one to connect to another. That would mean that the WH-1000XM4 headphones may be able to swap between paired devices much more quickly than the WH-1000XM3. Based on the strings, it sounds like all you have to do to swap audio output from one device to another is to simply play media from the currently inactive, but paired and connected, device. The one downside of this feature is that the high-quality LDAC Bluetooth audio codec can’t be used when multi-point is enabled.

Multi Point Strings

Cancels connection to the new device.
To connect to the selected device, try again after disconnecting one of the connected devices.
To connect a new device, try again after disconnecting one of the connected devices.
Disconnection of the currently connected device required
Disconnect %s?
"Disconnect %s? If disconnected, connection with this app will be disconnected."
Reconnection is necessary
The currently playing music will stop since reconnection to the headphones is necessary. Reconnect to headphones?
The currently playing music will stop since reconnection to the headphones is necessary. LDAC cannot be used when this setting is enabled. Reconnect to headphones?
"Cancel registration of %1$s? To connect to %1$s again after canceling the registration, cancel the registration of %2$s from %1$s, and perform device registration again."
To update the software, %s connected to the headphones must be disconnected. Disconnect and start update?
Required to disconnect the connected %s
To change the language, %s connected to the headphones must be disconnected. Disconnect and change the language?
Connection with %s failed.
Disconnection with %s failed.
Connection with a new device failed.
Canceling of %s registration failed.
By enabling this setting, the headphone will be able to connect to two devices simultaneously. Connected devices can be checked from [%s]. LDAC cannot be used when this setting is enabled.
To connect new devices, the software update must be aborted. Software update can be resumed even if it is aborted. Connect?
Required to abort software update
To connect with %s, the software update must be aborted. Software update can be resumed even if it is aborted. Connect?
Connection to %s complete.

No device is connected.
Audio is played back.
Connected.
Connecting...
Disconnecting...
Connect to 2 devices simultaneously
1.
2.

Open Bluetooth settings with the device you want to connect and select %s.
Not connected.
Device Currently Being Connected
Connect to New Device
Paired
Connecting...
Cancel Registration
Disconnect
"This headphone can be simultaneously connected to %d devices. To switch between music players, perform the play operation from the other device."
Manage Connected Device
Connecting...
Disconnecting...
Connects to a new device.

Smart Talking/Speak-to-Chat

The last feature might be the most interesting and useful. “Smart Talking” may allow the Sony WH-1000XM4 to automatically enable ambient sound when voice is detected. So if you are trying to talk to someone, the headphones will automatically allow ambient noise to come through so you can communicate. After a user-defined time (Fast, Mid, Slow, or None), noise cancellation will return. Users will also be able to adjust the voice detection sensitivity from Auto (based on ambient sound), High, or Low in case users find that it activates too often (such as when the person speaking is close by) or too little (such as when you’re in a vehicle). You can toggle this setting either from within the app or from (likely) the NC/Ambient button on the headphones.

Smart Talking Strings

"If the headphones do not detect your voice for the specified amount of time, Speak-to-Chat mode closes and returns to the normal state. Also, the mode can be closed at any time by operating the headphones."
Fast
Standard
Slow
Does not close automatically
Do not
Time until the mode closes
Approx. 1 m
Approx. 1 s
Approx %d s
Aprox %d m
Automatic
Automatically adjusts the sensitivity based on the ambient sound.
Automatic:
H Sensitivity
Select this setting when voice detection sensitivity is too low. Effective when the ambient sound is loud such as while you are in a vehicle.
H Sensitivity:
L Sensitivity
Select this setting when voice detection sensitivity is too high. Effective when the speaker is close by.
L Sensitivity:
Voice Detect Sensitivity
Speak-to-Chat Setting

Enabled Speak-to-Chat
Enables Speak-to-Chat to perform settings.
Enables Speak-to-Chat
"This setting can be switched through operations on your headphones. The operation method can be checked in [Help]."
Enable Speak-to-Chat?

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