Changes in 5325b40: ecm

				Tech-dat/Sensor-dat/microphone-sensor-dat/Electret-Condenser-Microphone-dat/2025-03-21-17-46-02.png
			
          Binary files a/Tech-dat/Sensor-dat/microphone-sensor-dat/Electret-Condenser-Microphone-dat/2025-03-21-17-46-02.png and /dev/null differ

				Tech-dat/Sensor-dat/microphone-sensor-dat/Electret-Condenser-Microphone-dat/2025-03-21-17-46-44.png
			
          Binary files a/Tech-dat/Sensor-dat/microphone-sensor-dat/Electret-Condenser-Microphone-dat/2025-03-21-17-46-44.png and /dev/null differ

				Tech-dat/Sensor-dat/microphone-sensor-dat/Electret-Condenser-Microphone-dat/Electret-Condenser-Microphone-dat.md
			
          @@ -1,43 +0,0 @@

          -

          -# Electret-Condenser-Microphone-dat

          -

          -- [[SSL1017-dat]]

          -

          -## EM-B6050UL

          -

          -## 适用范围： Scope	

          -

          -本规格书适用于驻极体式电容传声器 - This spccification applies electret condenser microphone (E.C.M)

          -

          -型号： - Model No.	EM-B6050UL

          -

          -使用条件： - Operation Condition

          -

          -- 3.1 环境温度 - Temperature	-20~+70℃

          -- 3.2 相对湿度 - Rel,Humidity	35%~85%RH

          -- 3.3 大气压力 - Pressure	86~106Kpa

          -- 3.4 环境噪声 - Environmental Noise	36dB  (最大) - 36dB  (Maximum)

          -- 3.5 工作电压范围 - Operation Voltage	1~10VDC

          -- 3.6 接地方式： - Earth	⊙

          -

          -电性能 Electrical Characteristics

          -

          -- 4.1 基准工作电压 - StandardOperationVoltage	4.5VDC

          -- 4.2 阻抗 - Impedance	小于2.2KΩ  - Less than 2.2KΩ

          -- 4.3 消耗电流 - Current Consumption	0.5mA   (最大) - 0.5mA   (Maximum)

          -- 4.4 灵敏度 - Sensitivity	-50dB±3dB(0dB=1V/Pa,1KHz) -- Vs=4.5V  R1=2.2KΩ

          -- 4.5 指向性 - Directivity	单指向性 - Unidirectional

          -- 4.6 信噪比 - S/N Ratio	56dB(最小) - 56dB(Minimum)

          -

          -4.7 测试电路图 - Schematic Diagram - Vs= 1.5V ； - R1=680Ω； - C=1uF

          -

          -![](2025-03-21-17-46-02.png)

          -

          -4.8 测试环境温度 -    Test Temperature -    测试环境湿度 -    Rel.Humidity

          -

          -20℃±2℃ - 45%~65%RH

          -

          -4.9 频率响应曲线 - Frequency Response

          -

          -

          -![](2025-03-21-17-46-44.png)

          \ No newline at end of file

				Tech-dat/Sensor-dat/microphone-sensor-dat/microphone-sensor-dat.md
			
          @@ -1,8 +0,0 @@

          -

          -# microphone-sensor-dat

          -

          -

          -

          -## ref 

          -

          -- [[LM393-dat]] - [[I2S-dat]]

          \ No newline at end of file

				Tech-dat/sensor-microphone-dat/Electret-Condenser-Microphone-dat/2025-03-21-17-46-02.png
			
          Binary files /dev/null and b/Tech-dat/sensor-microphone-dat/Electret-Condenser-Microphone-dat/2025-03-21-17-46-02.png differ

				Tech-dat/sensor-microphone-dat/Electret-Condenser-Microphone-dat/2025-03-21-17-46-44.png
			
          Binary files /dev/null and b/Tech-dat/sensor-microphone-dat/Electret-Condenser-Microphone-dat/2025-03-21-17-46-44.png differ

				Tech-dat/sensor-microphone-dat/Electret-Condenser-Microphone-dat/Electret-Condenser-Microphone-dat.md
			
          @@ -0,0 +1,61 @@

          +

          +# Electret-Condenser-Microphone-dat

          +

          +- in short == ECM 

          +

          +

          +An **Electret Condenser Microphone (ECM)** is a type of microphone that uses an electret material for its diaphragm and a built-in field-effect transistor (FET) to amplify the signal. It is one of the most common types of microphones used in consumer audio devices.

          +

          +Here's how the relationship between an ECM and the MAX9812 or ICS-41434 compares:

          +

          +### **Electret Condenser Microphone (ECM)**:

          +

          +1. **Type**: An analog microphone that uses a capacitor-based diaphragm (the electret) to capture sound.

          +2. **Powering**: Requires a power source known as **bias voltage** (typically 1.5V to 10V), which is applied to the diaphragm and the internal FET for amplification.

          +3. **Signal Output**: Provides an analog output signal that needs additional circuitry for amplification or processing.

          +4. **Sensitivity**: Generally offers good sensitivity but can be susceptible to noise or interference unless properly shielded and processed.

          +5. **Use Case**: Commonly used in a wide variety of applications, including consumer audio devices, microphones for cameras, recording, and communication systems.

          +

          +

          +## board 

          +

          +- [[SSL1017-dat]]

          +

          +## EM-B6050UL

          +

          +## 适用范围： Scope	

          +

          +本规格书适用于驻极体式电容传声器 - This spccification applies electret condenser microphone (E.C.M)

          +

          +型号： - Model No.	EM-B6050UL

          +

          +使用条件： - Operation Condition

          +

          +- 3.1 环境温度 - Temperature	-20~+70℃

          +- 3.2 相对湿度 - Rel,Humidity	35%~85%RH

          +- 3.3 大气压力 - Pressure	86~106Kpa

          +- 3.4 环境噪声 - Environmental Noise	36dB  (最大) - 36dB  (Maximum)

          +- 3.5 工作电压范围 - Operation Voltage	1~10VDC

          +- 3.6 接地方式： - Earth	⊙

          +

          +电性能 Electrical Characteristics

          +

          +- 4.1 基准工作电压 - StandardOperationVoltage	4.5VDC

          +- 4.2 阻抗 - Impedance	小于2.2KΩ  - Less than 2.2KΩ

          +- 4.3 消耗电流 - Current Consumption	0.5mA   (最大) - 0.5mA   (Maximum)

          +- 4.4 灵敏度 - Sensitivity	-50dB±3dB(0dB=1V/Pa,1KHz) -- Vs=4.5V  R1=2.2KΩ

          +- 4.5 指向性 - Directivity	单指向性 - Unidirectional

          +- 4.6 信噪比 - S/N Ratio	56dB(最小) - 56dB(Minimum)

          +

          +4.7 测试电路图 - Schematic Diagram - Vs= 1.5V ； - R1=680Ω； - C=1uF

          +

          +![](2025-03-21-17-46-02.png)

          +

          +4.8 测试环境温度 -    Test Temperature -    测试环境湿度 -    Rel.Humidity

          +

          +20℃±2℃ - 45%~65%RH

          +

          +4.9 频率响应曲线 - Frequency Response

          +

          +

          +![](2025-03-21-17-46-44.png)

          \ No newline at end of file

				Tech-dat/sensor-microphone-dat/sensor-microphone-dat.md
			
          @@ -0,0 +1,26 @@

          +

          +# microphone-sensor-dat

          +

          +- [[I2S-microphone-dat]]

          +

          +- [[Analog-microphone-dat]] - [[Electret-Condenser-Microphone-dat]]

          +

          +| Feature                        | Electret Condenser Microphone (ECM)         | MAX9812                                  | ICS-41434                                |

          +|---------------------------------|---------------------------------------------|------------------------------------------|------------------------------------------|

          +| **Type**                        | Analog, capacitive (with FET)               | Analog (with AGC)                        | Digital (MEMS, I2S)                      |

          +| **Powering**                    | Requires bias voltage (1.5V to 10V)         | Requires 2.7V to 3.6V (integrated power) | Requires 1.8V to 3.6V (integrated power) |

          +| **Signal Output**               | Analog                                     | Analog output (with AGC)                 | Digital output (I2S)                     |

          +| **Amplification**               | Needs external amplifier or preamp          | Built-in amplification with AGC         | Built-in digital conversion (I2S)        |

          +| **Size**                        | Larger, with external components           | Small, integrated AGC                    | Very compact, MEMS-based                 |

          +| **Technology**                  | Traditional electret condenser              | Integrated analog microphone with AGC    | MEMS technology (digital)                |

          +| **Use Case**                    | General-purpose audio recording, comm systems | Voice recording, audio applications      | Portable devices, IoT, consumer electronics |

          +

          +- **Powering**: ECMs need a bias voltage to function, whereas the MAX9812 and ICS-41434 use internal power supplies (usually lower voltage).

          +- **Signal Output**: ECMs give an analog output that often requires additional processing, while the MAX9812 provides analog output with built-in gain control, and the ICS-41434 outputs a digital signal (I2S) directly.

          +- **Technology**: ECMs use a traditional electret condenser design with a FET, while the MAX9812 is an analog microphone with AGC, and the ICS-41434 uses MEMS technology.

          +

          +

          +

          +## ref 

          +

          +- [[LM393-dat]] - [[I2S-dat]]

          \ No newline at end of file

...	...	@@ -1,43 +0,0 @@
1		-
2		-# Electret-Condenser-Microphone-dat
3		-
4		-- [[SSL1017-dat]]
5		-
6		-## EM-B6050UL
7		-
8		-## 适用范围： Scope
9		-
10		-本规格书适用于驻极体式电容传声器 - This spccification applies electret condenser microphone (E.C.M)
11		-
12		-型号： - Model No. EM-B6050UL
13		-
14		-使用条件： - Operation Condition
15		-
16		-- 3.1 环境温度 - Temperature -20~+70℃
17		-- 3.2 相对湿度 - Rel,Humidity 35%~85%RH
18		-- 3.3 大气压力 - Pressure 86~106Kpa
19		-- 3.4 环境噪声 - Environmental Noise 36dB (最大) - 36dB (Maximum)
20		-- 3.5 工作电压范围 - Operation Voltage 1~10VDC
21		-- 3.6 接地方式： - Earth ⊙
22		-
23		-电性能 Electrical Characteristics
24		-
25		-- 4.1 基准工作电压 - StandardOperationVoltage 4.5VDC
26		-- 4.2 阻抗 - Impedance 小于2.2KΩ - Less than 2.2KΩ
27		-- 4.3 消耗电流 - Current Consumption 0.5mA (最大) - 0.5mA (Maximum)
28		-- 4.4 灵敏度 - Sensitivity -50dB±3dB(0dB=1V/Pa,1KHz) -- Vs=4.5V R1=2.2KΩ
29		-- 4.5 指向性 - Directivity 单指向性 - Unidirectional
30		-- 4.6 信噪比 - S/N Ratio 56dB(最小) - 56dB(Minimum)
31		-
32		-4.7 测试电路图 - Schematic Diagram - Vs= 1.5V ； - R1=680Ω； - C=1uF
33		-
34		-![](2025-03-21-17-46-02.png)
35		-
36		-4.8 测试环境温度 - Test Temperature - 测试环境湿度 - Rel.Humidity
37		-
38		-20℃±2℃ - 45%~65%RH
39		-
40		-4.9 频率响应曲线 - Frequency Response
41		-
42		-
43		-![](2025-03-21-17-46-44.png)
...	...	\ No newline at end of file

...	...	@@ -1,8 +0,0 @@
1		-
2		-# microphone-sensor-dat
3		-
4		-
5		-
6		-## ref
7		-
8		-- [[LM393-dat]] - [[I2S-dat]]
...	...	\ No newline at end of file

...	...	@@ -0,0 +1,61 @@
	1	+
	2	+# Electret-Condenser-Microphone-dat
	3	+
	4	+- in short == ECM
	5	+
	6	+
	7	+An Electret Condenser Microphone (ECM) is a type of microphone that uses an electret material for its diaphragm and a built-in field-effect transistor (FET) to amplify the signal. It is one of the most common types of microphones used in consumer audio devices.
	8	+
	9	+Here's how the relationship between an ECM and the MAX9812 or ICS-41434 compares:
	10	+
	11	+### Electret Condenser Microphone (ECM):
	12	+
	13	+1. Type: An analog microphone that uses a capacitor-based diaphragm (the electret) to capture sound.
	14	+2. Powering: Requires a power source known as bias voltage (typically 1.5V to 10V), which is applied to the diaphragm and the internal FET for amplification.
	15	+3. Signal Output: Provides an analog output signal that needs additional circuitry for amplification or processing.
	16	+4. Sensitivity: Generally offers good sensitivity but can be susceptible to noise or interference unless properly shielded and processed.
	17	+5. Use Case: Commonly used in a wide variety of applications, including consumer audio devices, microphones for cameras, recording, and communication systems.
	18	+
	19	+
	20	+## board
	21	+
	22	+- [[SSL1017-dat]]
	23	+
	24	+## EM-B6050UL
	25	+
	26	+## 适用范围： Scope
	27	+
	28	+本规格书适用于驻极体式电容传声器 - This spccification applies electret condenser microphone (E.C.M)
	29	+
	30	+型号： - Model No. EM-B6050UL
	31	+
	32	+使用条件： - Operation Condition
	33	+
	34	+- 3.1 环境温度 - Temperature -20~+70℃
	35	+- 3.2 相对湿度 - Rel,Humidity 35%~85%RH
	36	+- 3.3 大气压力 - Pressure 86~106Kpa
	37	+- 3.4 环境噪声 - Environmental Noise 36dB (最大) - 36dB (Maximum)
	38	+- 3.5 工作电压范围 - Operation Voltage 1~10VDC
	39	+- 3.6 接地方式： - Earth ⊙
	40	+
	41	+电性能 Electrical Characteristics
	42	+
	43	+- 4.1 基准工作电压 - StandardOperationVoltage 4.5VDC
	44	+- 4.2 阻抗 - Impedance 小于2.2KΩ - Less than 2.2KΩ
	45	+- 4.3 消耗电流 - Current Consumption 0.5mA (最大) - 0.5mA (Maximum)
	46	+- 4.4 灵敏度 - Sensitivity -50dB±3dB(0dB=1V/Pa,1KHz) -- Vs=4.5V R1=2.2KΩ
	47	+- 4.5 指向性 - Directivity 单指向性 - Unidirectional
	48	+- 4.6 信噪比 - S/N Ratio 56dB(最小) - 56dB(Minimum)
	49	+
	50	+4.7 测试电路图 - Schematic Diagram - Vs= 1.5V ； - R1=680Ω； - C=1uF
	51	+
	52	+![](2025-03-21-17-46-02.png)
	53	+
	54	+4.8 测试环境温度 - Test Temperature - 测试环境湿度 - Rel.Humidity
	55	+
	56	+20℃±2℃ - 45%~65%RH
	57	+
	58	+4.9 频率响应曲线 - Frequency Response
	59	+
	60	+
	61	+![](2025-03-21-17-46-44.png)
...	...	\ No newline at end of file

...	...	@@ -0,0 +1,26 @@
	1	+
	2	+# microphone-sensor-dat
	3	+
	4	+- [[I2S-microphone-dat]]
	5	+
	6	+- [[Analog-microphone-dat]] - [[Electret-Condenser-Microphone-dat]]
	7	+
	8	+\| Feature \| Electret Condenser Microphone (ECM) \| MAX9812 \| ICS-41434 \|
	9	+\|---------------------------------\|---------------------------------------------\|------------------------------------------\|------------------------------------------\|
	10	+\| Type \| Analog, capacitive (with FET) \| Analog (with AGC) \| Digital (MEMS, I2S) \|
	11	+\| Powering \| Requires bias voltage (1.5V to 10V) \| Requires 2.7V to 3.6V (integrated power) \| Requires 1.8V to 3.6V (integrated power) \|
	12	+\| Signal Output \| Analog \| Analog output (with AGC) \| Digital output (I2S) \|
	13	+\| Amplification \| Needs external amplifier or preamp \| Built-in amplification with AGC \| Built-in digital conversion (I2S) \|
	14	+\| Size \| Larger, with external components \| Small, integrated AGC \| Very compact, MEMS-based \|
	15	+\| Technology \| Traditional electret condenser \| Integrated analog microphone with AGC \| MEMS technology (digital) \|
	16	+\| Use Case \| General-purpose audio recording, comm systems \| Voice recording, audio applications \| Portable devices, IoT, consumer electronics \|
	17	+
	18	+- Powering: ECMs need a bias voltage to function, whereas the MAX9812 and ICS-41434 use internal power supplies (usually lower voltage).
	19	+- Signal Output: ECMs give an analog output that often requires additional processing, while the MAX9812 provides analog output with built-in gain control, and the ICS-41434 outputs a digital signal (I2S) directly.
	20	+- Technology: ECMs use a traditional electret condenser design with a FET, while the MAX9812 is an analog microphone with AGC, and the ICS-41434 uses MEMS technology.
	21	+
	22	+
	23	+
	24	+## ref
	25	+
	26	+- [[LM393-dat]] - [[I2S-dat]]
...	...	\ No newline at end of file