docs: correct speaker output pitch

docs/en/design-guide/board-esp32-lyrat-mini-v1.2.rst

@@ -40,9 +40,9 @@ Audio Output
 Audio ADC Chip
     The audio codec chip, `ES7243`_, is a low power multi-bit delta-sigma audio ADC and DAC. In this board this chip is used as the microphone interface.
 PA Chip
-    A power amplifier used to amplify the audio signal from the **Audio Codec Chip** for driving the 4-ohm speaker.
+    A power amplifier used to amplify the audio signal from the **Audio Codec Chip** for driving the speaker.
 Speaker Output
-    Output socket to connect 4 ohm speaker. The pins have a standard 2.54 mm / 0.1" pitch.
+    Output socket to connect a speaker. The 4-ohm and 3-watt speaker is recommended. The pins have a 2.00 mm / 0.08" pitch.
 Audio Function Press Keys
     Six press keys labeled **Rec**, **Mode**, **Play**, **Set**, **Vol-** and **Vol+**. They are routed to **ESP32-WROVER-B Module** and intended for development and testing of a UI for audio applications using dedicated API.
 

docs/en/design-guide/board-esp32-lyrat-v4.3.rst

@@ -64,11 +64,11 @@ Headphone Output
 Right Microphone
     Onboard microphone connected to IN1 of the **Audio Codec Chip**.
 Left Speaker Output
-    Output socket to connect 4 ohm speaker. The pins have a standard 2.54 mm / 0.1" pitch.
+    Output socket to connect a speaker. The 4-ohm and 3-watt speaker is recommended. The pins have a 2.00 mm / 0.08" pitch.
 Right Speaker Output
-    Output socket to connect 4 ohm speaker. The pins have a standard 2.54 mm / 0.1" pitch.
+    Output socket to connect a speaker. The 4-ohm and 3-watt speaker is recommended. The pins have a 2.00 mm / 0.08" pitch.
 PA Chip
-    A power amplifier used to amplify stereo audio signal from the **Audio Codec Chip** for driving two 4-ohm speakers.
+    A power amplifier used to amplify stereo audio signal from the **Audio Codec Chip** for driving two speakers.
 Boot/Reset Press Keys
     Boot button: holding down the **Boot** button and momentarily pressing the **Reset** button to initiate the firmware download mode. Then you can download firmware through the serial port. Reset button: pressing this button alone resets the system.
 Touch Pad Buttons

docs/en/get-started/get-started-esp32-lyrat-mini.rst

@@ -14,7 +14,7 @@ What You Need
 -------------
 
 * :ref:`ESP32-LyraT-Mini V1.2 board <get-started-esp32-lyrat-mini-v1.2-board>`
-* 4-ohm speaker with Dupont female jumper wires or headphones with a 3.5 mm jack
+* Speaker or headphones with a 3.5 mm jack. If you use a speaker, it is recommended to choose one no more than 3 watts, and JST PH 2.0 2-Pin plugs are needed. In case you do not have this type of plug it is also fine to use Dupont female jumper wires during development.
 * Two Micro-USB 2.0 cables, Type A to Micro B
 * PC loaded with Windows, Linux or Mac OS
 
@@ -64,7 +64,7 @@ Audio Codec Chip
 Audio Output
 	Output socket to connect headphones with a 3.5 mm stereo jack. (Please note that the board outputs a mono signal)
 Speaker Output
-	Output socket to connect 4 ohm speaker. The pins have a standard 2.54 mm / 0.1" pitch.
+	Output socket to connect a speaker. The 4-ohm and 3-watt speaker is recommended. The pins have a 2.00 mm / 0.08" pitch.
 
 .. _get-started-esp32-lyrat-mini-v1.2-board:
 
@@ -100,7 +100,7 @@ Initial Setup
 
 Prepare the board for loading of the first sample application:
 
-1. Connect 4-ohm speaker to the **Speaker Output**. Connecting headphones to the **Audio Output** is an option.
+1. Connect speaker to the **Speaker Output**. Connecting headphones to the **Audio Output** is an option.
 2. Plug in the Micro-USB cables to the PC and to **both USB ports** of the ESP32-LyraT-Mini.
 3. The **Standby LED** (green) should turn on. Assuming that a battery is not connected, the **Charging LED** (red) will blink every couple of seconds.
 4. Toggle top the **Power On Switch**.

docs/en/get-started/get-started-esp32-lyrat-v4.2.rst

@@ -12,7 +12,7 @@ What You Need
 -------------
 
 * 1 × :ref:`ESP32 LyraT V4.2 board <get-started-esp32-lyrat-v4.2-board>`
-* 2 x 4-ohm speakers with Dupont female jumper wires or headphones with a 3.5 mm jack
+* 2 × Speaker or headphones with a 3.5 mm jack. If you use a speaker, it is recommended to choose one no more than 3 watts, and JST PH 2.0 2-Pin plugs are needed. In case you do not have this type of plug it is also fine to use Dupont female jumper wires during development.
 * 2 x Micro-USB 2.0 cables, Type A to Micro B
 * 1 × PC loaded with Windows, Linux or Mac OS
 
@@ -83,11 +83,11 @@ Headphone Output
 Right Microphone
     Onboard microphone connected to IN1 of the **Audio Codec Chip**.
 Left Speaker Output
-    Output socket to connect 4 ohm speaker. The pins have a standard 2.54 mm / 0.1" pitch.
+     Output socket to connect a speaker. The 4-ohm and 3-watt speaker is recommended. The pins have a 2.00 mm / 0.08" pitch.
 Right Speaker Output
-    Output socket to connect 4 ohm speaker. The pins have a standard 2.54 mm / 0.1" pitch.
+     Output socket to connect a speaker. The 4-ohm and 3-watt speaker is recommended. The pins have a 2.00 mm / 0.08" pitch.
 PA Chip
-    A power amplifier used to amplify stereo audio signal from the **Audio Codec Chip** for driving two 4-ohm speakers.
+    A power amplifier used to amplify stereo audio signal from the **Audio Codec Chip** for driving two speakers.
 Boot/Reset Press Keys
     Boot: holding down the **Boot** button and momentarily pressing the **Reset** button initiates the firmware upload mode. Then user can upload firmware through the serial port. Reset: pressing this button alone resets the system.
 Touch Pad Buttons
@@ -420,7 +420,7 @@ Initial Setup
 Prepare the board for loading of the first sample application:
 
 1. Install jumpers on **IO0** and **EN** headers to enable automatic application upload. If there are no jumpers then upload may be triggered using **Boot** / **RST** buttons.
-2. Connect 4-ohm speakers to the **Right** and **Left Speaker Output**.Connecting headphones to the **Headphone Output** is an option.
+2. Connect speakers to the **Right** and **Left Speaker Output**.Connecting headphones to the **Headphone Output** is an option.
 3. Plug in the Micro-USB cables to the PC and to **both USB ports** of the ESP32 LyraT.
 4. The **Standby LED** (green) should turn on.  Assuming that a battery is not connected, the **Charging LED** will blink every couple of seconds.
 5. Toggle left the **Power On Switch**.

docs/en/get-started/get-started-esp32-lyrat-v4.rst

@@ -12,8 +12,8 @@ What You Need
 -------------
 
 * 1 × :ref:`ESP32-LyraT V4 board <get-started-esp32-lyrat-v4-board>`
-* 2 x 4-ohm speakers with Dupont female jumper wires or headphones with a 3.5 mm jack
-* 1 x Micro USB 2.0 Cable, Type A to Micro B
+* 2 × Speaker or headphones with a 3.5 mm jack. If you use a speaker, it is recommended to choose one no more than 3 watts, and JST PH 2.0 2-Pin plugs are needed. In case you do not have this type of plug it is also fine to use Dupont female jumper wires during development.
+* 1 × Micro USB 2.0 Cable, Type A to Micro B
 * 1 × PC loaded with Windows, Linux or Mac OS
 
 
@@ -83,11 +83,11 @@ Headphone Output
 Right Microphone
     Onboard microphone connected to IN1 of the **Audio Codec Chip**.
 Left Speaker Output
-    Output socket to connect 4 ohm speaker. The pins have a standard 2.54 mm / 0.1" pitch.
+    Output socket to connect a speaker. The 4-ohm and 3-watt speaker is recommended. The pins have a 2.00 mm / 0.08" pitch.
 Right Speaker Output
-    Output socket to connect 4 ohm speaker. The pins have a standard 2.54 mm / 0.1" pitch.
+    Output socket to connect a speaker. The 4-ohm and 3-watt speaker is recommended. The pins have a 2.00 mm / 0.08" pitch.
 PA Chip
-    A power amplifier used to amplify stereo audio signal from the **Audio Codec Chip** for driving two 4-ohm speakers.
+    A power amplifier used to amplify stereo audio signal from the **Audio Codec Chip** for driving two speakers.
 Boot/Reset Press Keys
     Boot: holding down the **Boot** button and momentarily pressing the **Reset** button initiates the firmware upload mode. Then user can upload firmware through the serial port. Reset: pressing this button alone resets the system.
 Touch Pad Buttons
@@ -394,7 +394,7 @@ Initial Setup
 
 Prepare the board for loading of the first sample application:
 
-1. Connect 4-ohm speakers to the **Right** and **Left Speaker Output**. Optionally connect headphones to the **Headphone Output**.
+1. Connect speakers to the **Right** and **Left Speaker Output**. Optionally connect headphones to the **Headphone Output**.
 2. Plug in the Micro-USB cable to the PC and to the **Micro USB Port** of the ESP32-LyraT.
 3. The **Standby LED** (green) should turn on.  Assuming that a battery is not connected, the **Charging LED** will momentarily blink every couple of seconds.
 4. Toggle left the **Power On Switch**.

docs/en/get-started/get-started-esp32-lyrat.rst

@@ -14,7 +14,7 @@ What You Need
 -------------
 
 * 1 × :ref:`ESP32 LyraT V4.3 board <get-started-esp32-lyrat-v4.3-board>`
-* 2 x 4-ohm speakers with Dupont female jumper wires or headphones with a 3.5 mm jack
+* 2 x Speaker or headphones with a 3.5 mm jack. If you use a speaker, it is recommended to choose one no more than 3 watts, and JST PH 2.0 2-Pin plugs are needed. In case you do not have this type of plug it is also fine to use Dupont female jumper wires during development.
 * 2 x Micro-USB 2.0 cables, Type A to Micro B
 * 1 × PC loaded with Windows, Linux or Mac OS
 
@@ -71,9 +71,9 @@ Headphone Output
     ESP32-LyraT V4.3 Board Layout Overview
 
 Left Speaker Output
-    Output socket to connect 4 ohm speaker. The pins have a standard 2.54 mm / 0.1" pitch.
+    Output socket to connect a speaker. The 4-ohm and 3-watt speaker is recommended. The pins have a 2.00 mm / 0.08" pitch.
 Right Speaker Output
-    Output socket to connect 4 ohm speaker. The pins have a standard 2.54 mm / 0.1" pitch.
+    Output socket to connect a speaker. The 4-ohm and 3-watt speaker is recommended. The pins have a 2.00 mm / 0.08" pitch.
 Boot/Reset Press Keys
     Boot: holding down the **Boot** button and momentarily pressing the **Reset** button initiates the firmware upload mode. Then user can upload firmware through the serial port. Reset: pressing this button alone resets the system.
 Audio Codec Chip
@@ -101,7 +101,7 @@ Initial Setup
 
 Prepare the board for loading of the first sample application:
 
-1. Connect 4-ohm speakers to the **Right** and **Left Speaker Output**. Connecting headphones to the **Headphone Output** is an option.
+1. Connect speakers to the **Right** and **Left Speaker Output**. Connecting headphones to the **Headphone Output** is an option.
 2. Plug in the Micro-USB cables to the PC and to **both USB ports** of the ESP32 LyraT.
 3. The **Standby LED** (green) should turn on. Assuming that a battery is not connected, the **Charging LED** (red) will blink every couple of seconds.
 4. Toggle left the **Power On Switch**.

docs/en/get-started/get-started-esp32-lyratd-msc.rst

@@ -12,7 +12,7 @@ What You Need
 -------------
 
 * 1 × :ref:`ESP32-LyraTD-MSC V2.2 board <get-started-esp32-lyratd-msc-v2.2-board>`
-* 2 x 4-ohm speakers with Dupont female jumper wires or headphones with a 3.5 mm jack
+* 2 x Speaker or headphones with a 3.5 mm jack. If you use a speaker, it is recommended to choose one no more than 3 watts, and JST PH 2.0 2-Pin plugs are needed. In case you do not have this type of plug it is also fine to use Dupont female jumper wires during development.
 * 2 x Micro-USB 2.0 cables, Type A to Micro B
 * 1 × PC loaded with Windows, Linux or Mac OS
 
@@ -74,9 +74,9 @@ Headphone Output
         The socket may be used with mobile phone headsets and is compatible with OMPT standard headsets only. It does not work with CTIA headsets. Please refer to `Phone connector (audio) <https://en.wikipedia.org/wiki/Phone_connector_(audio)#TRRS_standards>`_ on Wikipedia.
 
 Left Speaker Output
-    Output socket to connect 4 ohm speaker. The pins have a standard 2.54 mm / 0.1" pitch.
+    Output socket to connect a speaker. The 4-ohm and 3-watt speaker is recommended. The pins have a 2.00 mm / 0.08" pitch.
 Right Speaker Output
-    Output socket to connect 4 ohm speaker. The pins have a standard 2.54 mm / 0.1" pitch.
+    Output socket to connect a speaker. The 4-ohm and 3-watt speaker is recommended. The pins have a 2.00 mm / 0.08" pitch.
 
 .. figure:: ../../_static/esp32-lyratd-msc-v2.2-a-top.png
     :alt: ESP32-LyraTD-MSC V2.2 Lower Board (A) Components
@@ -118,7 +118,7 @@ Initial Setup
 
 Prepare the board for loading of the first sample application:
 
-1. Connect 4-ohm speakers to the **Right** and **Left Speaker Output**. Connecting headphones to the **Headphone Output** is an option.
+1. Connect speakers to the **Right** and **Left Speaker Output**. Connecting headphones to the **Headphone Output** is an option.
 2. Plug in the Micro-USB cables to the PC and to **both USB ports** of the ESP32-LyraTD-MSC.
 3. The **Standby LED** (green) should turn on. Assuming that a battery is not connected, the **Charging LED** (red) will blink every couple of seconds.
 4. Toggle right the **Power Switch**.

docs/zh_CN/get-started/get-started-esp32-lyrat-mini.rst

@@ -14,7 +14,7 @@ ESP32-LyraT-Mini 是单声道音频开发板，如需立体声音频开发板，
 -------------
 
 * :ref:`ESP32-LyraT-Mini V1.2 开发板 <get-started-esp32-lyrat-mini-v1.2-board>`
-* 带有杜邦母跳线的 4 欧姆扬声器或音频接口为 3.5 mm 的耳机
+* 扬声器或 3.5 mm 的耳机（若使用扬声器，建议功率不超过 3 瓦特，另外需要接口为 JST PH 2.0 毫米 2 针的插头，若没有此插头，开发过程中可替换为杜邦母跳线）
 * 两个 Micro-USB 2.0 数据线（Type A 到 Micro B）
 * PC（Windows、Linux 或 Mac OS） 
 
@@ -35,7 +35,7 @@ ESP32-LyraT-Mini 1.2 是基于 `乐鑫 <https://espressif.com>`_ ESP32 专为音
 * **ADC 芯片**
 * **麦克风**
 * **音频输出**
-* **1 x 3-watt 扬声器** 输出
+* **1 x 3 瓦特扬声器** 输出
 * **MicroSD 卡** 槽（一线模式） 
 * **八个键**
 * **两个系统指示灯**
@@ -62,7 +62,7 @@ ESP32-LyraT-Mini 1.2 是基于 `乐鑫 <https://espressif.com>`_ ESP32 专为音
 音频输出
 	音频输出插槽，可连接 3.5 mm 立体声耳机。（请注意，此开发板输出单声道信号）
 扬声器输出
-	音频输出插槽，采用 2.54 mm / 0.1" 标准排针间距，可连接 4 欧姆扬声器。
+	音频输出插槽，采用 2.00 mm / 0.08" 排针间距，建议连接 4 欧姆 3 瓦特扬声器。
 
 .. _get-started-esp32-lyrat-mini-v1.2-board:
 
@@ -98,7 +98,7 @@ ESP32-LyraT-Mini 上电之前，请首先确认开发板完好无损。
 
 设置开发板，运行首个示例应用程序：
 
-1. 连接 4 欧姆扬声器到 **扬声器输出**。也可选择连接耳机到 **音频输出**。 
+1. 连接扬声器到 **扬声器输出**。也可选择连接耳机到 **音频输出**。 
 2. 使用 Micro-USB 数据线将 ESP32-LyraT-Mini 开发板的 **两个 USB 端口** 均与 PC 相连。
 3. 此时，绿色 **待机指示灯** 应亮起。假设电池未连接，那么红色 **充电指示灯** 将每隔几秒闪烁一次。
 4. 向上拨动 **电源开关**。

docs/zh_CN/get-started/get-started-esp32-lyrat.rst

@@ -14,7 +14,7 @@ ESP32-LyraT 是一款立体声音频开发板，如需单声道音频开发板
 ----------
 
 * 1 × :ref:`ESP32 LyraT V4.3 开发板 <get-started-esp32-lyrat-v4.3-board>`
-* 2 x 带有杜邦母跳线的 4 ohm 扬声器或 3.5 mm 耳机
+* 2 x 扬声器或 3.5 mm 的耳机（若使用扬声器，建议功率不超过 3 瓦特，另外需要接口为 JST PH 2.0 毫米 2 针的插头，若没有此插头，开发过程中可替换为杜邦母跳线）
 * 2 x Micro-USB 2.0 数据线（Type A 转 Micro B）
 * 1 × PC（Windows、 Linux 或 Mac OS）
 
@@ -71,9 +71,9 @@ ESP32-WROVER 模组
     ESP32-LyraT V4.3 开发板布局示意图
 
 左侧扬声器输出
-    输出插槽采用 2.54 mm / 0.1” 标准排针间距，可连接 4 ohm 扬声器。
+    音频输出插槽，采用 2.00 mm / 0.08" 排针间距，建议连接 4 欧姆 3 瓦特扬声器。
 右侧扬声器输出
-    输出插槽采用 2.54 mm / 0.1” 标准排针间距，可连接 4 ohm 扬声器。
+    音频输出插槽，采用 2.00 mm / 0.08" 排针间距，建议连接 4 欧姆 3 瓦特扬声器。
 启动/复位按键
     启动: 长按 **Boot** 键，然后按下 **Reset** 键进入烧写模式，此时可通过串行端口上传固件。复位：仅按下 **Reset** 键只能重置系统。
 音频编解码芯片
@@ -101,7 +101,7 @@ ESP32-LyraT 上电之前，请首先确认开发板完好无损。
 
 设置开发板，运行首个示例应用程序：
 
-1. 连接 4 欧姆扬声器至 **两个扬声器输出**，或将耳机连接至 **耳机输出**。
+1. 连接扬声器至 **两个扬声器输出**，或将耳机连接至 **耳机输出**。
 2. 插入 Micro-USB 数据线，连接 PC 与 ESP32-LyraT 开发板的 **两个 USB 端口**。
 3. 此时，绿色 **待机指示灯** 应亮起。若电池未连接，红色 **充电指示灯** 每隔几秒闪烁一次。
 4. 向左拨动 **电源开关**。

docs/zh_CN/get-started/get-started-esp32-lyratd-msc.rst

@@ -11,7 +11,7 @@ ESP32-LyraTD-MSC 是一款面向智能音箱和 AI 应用程序的硬件平台
 -------------
 
 * 1 × :ref:`ESP32-LyraTD-MSC V2.2 board <get-started-esp32-lyratd-msc-v2.2-board>`
-* 2 x 带有杜邦母跳线的 4 ohm 扬声器或 3.5 mm 耳机
+* 2 x 扬声器或 3.5 mm 的耳机（若使用扬声器，建议功率不超过 3 瓦特，另外需要接口为 JST PH 2.0 毫米 2 针的插头，若没有此插头，开发过程中可替换为杜邦母跳线）
 * 2 x Micro-USB 2.0 数据线（Type A 转 Micro B）
 * 1 × PC（Windows、 Linux 或 Mac OS）
 
@@ -73,9 +73,9 @@ DSP 芯片
         该插槽可接入移动电话耳机，只与 OMPT 标准耳机兼容，与 CTIA 耳机不兼容。更多耳机标准信息请访问维基百科 `Phone connector (audio) <https://en.wikipedia.org/wiki/Phone_connector_(audio)#TRRS_standards>`_ 词条。
 
 左侧扬声器输出
-    输出插槽采用 2.54 mm / 0.1” 标准排针间距，可连接 4 ohm 扬声器。
+    音频输出插槽，采用 2.00 mm / 0.08" 排针间距，建议连接 4 欧姆 3 瓦特扬声器。
 右侧扬声器输出
-    输出插槽采用 2.54 mm / 0.1” 标准排针间距，可连接 4 ohm 扬声器。
+    音频输出插槽，采用 2.00 mm / 0.08" 排针间距，建议连接 4 欧姆 3 瓦特扬声器。
 
 .. figure:: ../../_static/esp32-lyratd-msc-v2.2-a-top.png
     :alt: ESP32-LyraTD-MSC V2.2 Lower Board (A) Components
@@ -117,7 +117,7 @@ ESP32-LyraTD-MSC 上电之前，请首先确认开发板完好无损，且上板
 
 设置开发板，以运行首个示例应用程序：
 
-1. 将 4 欧姆扬声器连接至 **两个扬声器输出**，或将耳机连接至 **耳机输出**。
+1. 将扬声器连接至 **两个扬声器输出**，或将耳机连接至 **耳机输出**。
 2. 插入 Micro-USB 数据线，连接 PC 与 ESP32-LyraTD-MSC 开发板的 **两个 USB 端口**。
 3. 此时，绿色 **待机指示灯** 应亮起。若电池未连接，红色 **充电指示灯** 每隔几秒闪烁一次。
 4. 向右拨动 **电源开关**。