1 00:00:00,400 --> 00:00:07,920 Hello everyone, I'm Li Guohong, and I'd like to introduce my DIY speaker. 2 00:00:08,000 --> 00:00:11,400 Let's start with the appearance. 3 00:00:11,480 --> 00:00:16,200 It's not very big, about 30 cm and 8 cm tall. 4 00:00:16,320 --> 00:00:20,360 It has some knobs and a speaker grille. 5 00:00:20,480 --> 00:00:24,360 There's also a subwoofer on the back. 6 00:00:24,480 --> 00:00:32,935 Besides the basic features like the front adjustment functions, this passive amp 7 00:00:32,960 --> 00:00:39,640 also has a built-in delay effect, EQ effect, and volume control. 8 00:00:39,760 --> 00:00:45,640 It also includes Bluetooth and other specific functions. 9 00:00:45,720 --> 00:00:52,440 There are two other ports: a power port and a sound output port. 10 00:00:52,520 --> 00:00:57,360 This is the slot for the push-to-open antenna. 11 00:00:57,440 --> 00:01:00,280 That's basically its shape. 12 00:01:00,400 --> 00:01:08,440 Another design feature is that when performing, this side faces the audience. 13 00:01:08,560 --> 00:01:15,440 I tried to keep it clean, with all the ports facing the performer. 14 00:01:15,560 --> 00:01:22,680 In general use, this speaker grille can be used for indoor practice. 15 00:01:22,800 --> 00:01:29,720 This way, we can operate it without connecting a separate speaker. 16 00:01:30,320 --> 00:01:35,975 If we need to perform outdoors or for 17 00:01:36,000 --> 00:01:41,975 events requiring higher volume, we can 18 00:01:42,000 --> 00:01:47,560 switch to the external sound source. 19 00:01:47,680 --> 00:01:54,135 We're currently working on adding another 20 00:01:54,160 --> 00:02:00,415 headphone jack for monitoring our tuning 21 00:02:00,440 --> 00:02:08,120 or to check our performance status during playing. 22 00:02:08,280 --> 00:02:13,655 Next, I'll demonstrate some of the 23 00:02:13,680 --> 00:02:18,440 basic functions of these knobs. 24 00:02:18,600 --> 00:02:22,880 First, we'll tune the sound. 25 00:02:23,040 --> 00:02:28,600 What different timbres does it have? 26 00:02:28,720 --> 00:02:33,800 For example, is this a true wave? 27 00:02:33,960 --> 00:02:39,040 Or the standard harpsichord tone? 28 00:02:39,200 --> 00:02:44,560 Or the tone of a string instrument? 29 00:02:44,720 --> 00:02:49,960 Yes, there's also a sawtooth wave. 30 00:02:50,080 --> 00:02:55,000 Or some other different timbres. 31 00:02:55,160 --> 00:03:04,535 Then, through the built-in effects and delay effects, we can 32 00:03:04,560 --> 00:03:08,400 adjust different effects. 33 00:03:15,400 --> 00:03:17,600 Sound. 34 00:03:18,040 --> 00:03:19,800 You. 35 00:03:20,240 --> 00:03:36,080 You you you you you you you you you? 36 00:03:42,400 --> 00:03:44,840 You also have EQ effects. 37 00:03:44,960 --> 00:03:51,600 We can adjust her high and low frequencies for different timbres. 38 00:03:57,080 --> 00:03:58,560 Hmm. 39 00:04:00,000 --> 00:04:03,720 Then weaken the high frequencies. 40 00:04:03,840 --> 00:04:07,320 Or weaken the low frequencies? 41 00:04:07,440 --> 00:04:15,480 Its waveform can be slightly altered to suit different sound devices. 42 00:04:15,600 --> 00:04:24,560 This also adds Bluetooth functionality, allowing playback of Bluetooth music, 43 00:04:24,640 --> 00:04:29,080 and can also be used as accompaniment. 44 00:04:33,720 --> 00:04:34,160 you? 45 00:04:36,440 --> 00:04:44,840 You, you, you, you? 46 00:04:45,320 --> 00:04:49,520 You, you? 47 00:04:50,000 --> 00:04:51,840 You? 48 00:04:52,320 --> 00:04:56,520 You, you? 49 00:05:01,000 --> 00:05:08,415 You were recording through the sound card just now; now we'll use 50 00:05:08,440 --> 00:05:11,000 this included speaker. 51 00:05:20,960 --> 00:05:24,000 Listen! 52 00:05:24,560 --> 00:05:28,640 It's me. 53 00:05:36,600 --> 00:05:44,920 Would you consider it to have Bluetooth functionality? 54 00:05:45,040 --> 00:05:52,880 So it can actually be used as a Bluetooth speaker. 55 00:05:53,040 --> 00:05:59,735 My idea is this: I hope to create a device 56 00:05:59,760 --> 00:06:06,495 that can interact with sound, so that when 57 00:06:06,520 --> 00:06:16,335 you hear a song you like, you can immediately immerse yourself 58 00:06:16,360 --> 00:06:20,280 in the mood of that song. 59 00:06:27,800 --> 00:06:28,200 you. 60 00:06:36,200 --> 00:06:40,000 15. 61 00:07:17,720 --> 00:07:20,480 55. 62 00:07:21,880 --> 00:07:26,000 55. 63 00:07:27,360 --> 00:07:31,520 55. 64 00:07:41,160 --> 00:07:41,800 five.