diff --git a/_docs/ch06/index.md b/_docs/ch06/index.md
index 9ff1254..cbe629c 100644
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@@ -36,7 +36,7 @@ Freely available datasets for sound classification and tagging and sound event d
 | **Environmental Sounds**                                                                                                                                      |
 | [ESC-10](https://github.com/karoldvl/ESC-10)                                    | collected   | 10      | 400      | 33         | [Piczak2015a](http://karol.piczak.com/papers/Piczak2015-ESC-ConvNet.pdf), [Hertel2016](http://www.ieeeexplore.ws/document/7727635/)  |
 | [ESC-50](https://github.com/karoldvl/ESC-50)                                    | collected   | 50      | 2000     | 166        | [Piczak2015a](http://karol.piczak.com/papers/Piczak2015-ESC-ConvNet.pdf), [Piczak2015b](http://karol.piczak.com/papers/Piczak2015-ESC-Dataset.pdf) |
-| [NYU Urban Sound8K](http://serv.cusp.nyu.edu/projects/urbansounddataset/urbansound8k.html) | collected   | 10      | 8732     | 525        | [Salamon2014](https://serv.cusp.nyu.edu/projects/urbansounddataset/salamon_urbansound_acmmm14.pdf) |
+| [NYU Urban Sound8K](http://urbansounddataset.weebly.com/urbansound8k.html) | collected   | 10      | 8732     | 525        | [Salamon2014](http://www.justinsalamon.com/uploads/4/3/9/4/4394963/salamon_urbansound_acmmm14.pdf) |
 | [CHIME-Home](https://archive.org/details/chime-home)                            | recorded    | 7       | 6137     | 409        | [DCASE2016](http://www.cs.tut.fi/sgn/arg/dcase2016/task-audio-tagging), [Foster2015](http://ieeexplore.ieee.org/abstract/document/7336899/?reload=true) |
 | [Freefield 1010](http://c4dm.eecs.qmul.ac.uk/rdr/handle/123456789/35)           | collected   | 7       | 400      | 33         | [Stowell2014a](http://www.aes.org/tmpFiles/elib/20170724/17095.pdf) |
 | [CICESE Sound Events](http://sound.natix.org/databases/allSounds.zip)           | collected   | 20      | 1367     | 92         | [Beltran2015](http://www.sciencedirect.com/science/article/pii/S0167865515002925) |
@@ -47,7 +47,7 @@ Freely available datasets for sound classification and tagging and sound event d
 | [DCASE 2013 Office Synthetic](https://archive.org/details/dcase2013_event_detection_development_OS) | recorded    | 16      | 320      | 19         | DCASE2013, [Stowell2015](http://ieeexplore.ieee.org/document/7100934/) |
 | [TUT Sound Events 2016](https://zenodo.org/record/45759)                        | recorded    | 18      | 954      | 78         | [DCASE2016](http://www.cs.tut.fi/sgn/arg/dcase2016/task-sound-event-detection-in-real-life-audio), [Mesaros2016b]()|
 | [TUT Sound Events 2017](https://zenodo.org/record/400516)                       | recorded    | 6       | 729      | 92         | [DCASE2017](http://www.cs.tut.fi/sgn/arg/dcase2017/challenge/task-sound-event-detection-in-real-life-audio) |
-| [NYU Urban Sound](http://serv.cusp.nyu.edu/projects/urbansounddataset/urbansound.html) | collected   | 10      | 3075     | 1620       | [Salamon2014](https://serv.cusp.nyu.edu/projects/urbansounddataset/salamon_urbansound_acmmm14.pdf), [Salamon2015a](http://www.justinsalamon.com/uploads/4/3/9/4/4394963/salamon_bello_scattering_eusipco_2015.pdf), [Salomon2015b](http://www.justinsalamon.com/uploads/4/3/9/4/4394963/salamon_unsupervisedlearning_urbansound_icassp_2015.pdf) |
+| [NYU Urban Sound](http://urbansounddataset.weebly.com/urbansound.html) | collected   | 10      | 3075     | 1620       | [Salamon2014](http://www.justinsalamon.com/uploads/4/3/9/4/4394963/salamon_urbansound_acmmm14.pdf), [Salamon2015a](http://www.justinsalamon.com/uploads/4/3/9/4/4394963/salamon_bello_scattering_eusipco_2015.pdf), [Salomon2015b](http://www.justinsalamon.com/uploads/4/3/9/4/4394963/salamon_unsupervisedlearning_urbansound_icassp_2015.pdf) |
 | [TU Dortmund Multichannel](http://patrec.cs.tu-dortmund.de/files/datasets/dcase2016_multichannel-aed_dortmund.7z) | recorded    | 15      | 1170     | 585        | [Kuerby2016](https://www.cs.tut.fi/sgn/arg/dcase2016/documents/workshop/Kuerby-DCASE2016workshop.pdf) |
 
 ### 6.4.3 Data Augmentation